Merge branch 'rds-fixes'
Shamir Rabinovitch says: ==================== WARNING in rds_message_alloc_sgs This patch set fix google syzbot rds bug found in linux-next. The first patch solve the syzbot issue. The second patch fix issue mentioned by Leon Romanovsky that drivers should not call WARN_ON as result from user input. syzbot bug report can be foud here: https://lkml.org/lkml/2018/10/31/28 v1->v2: - patch 1: make rds_iov_vector fields name more descriptive (Hakon) - patch 1: fix potential mem leak in rds_rm_size if krealloc fail (Hakon) v2->v3: - patch 2: harden rds_sendmsg for invalid number of sgs (Gerd) v3->v4 - Santosh a.b. on both patches + repost to net-dev ==================== Signed-off-by: David S. Miller <davem@davemloft.net>hifive-unleashed-5.1
commit
912cb1d55c
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@ -308,17 +308,28 @@ out:
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/*
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/*
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* RDS ops use this to grab SG entries from the rm's sg pool.
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* RDS ops use this to grab SG entries from the rm's sg pool.
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*/
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*/
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struct scatterlist *rds_message_alloc_sgs(struct rds_message *rm, int nents)
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struct scatterlist *rds_message_alloc_sgs(struct rds_message *rm, int nents,
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int *ret)
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{
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{
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struct scatterlist *sg_first = (struct scatterlist *) &rm[1];
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struct scatterlist *sg_first = (struct scatterlist *) &rm[1];
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struct scatterlist *sg_ret;
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struct scatterlist *sg_ret;
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WARN_ON(rm->m_used_sgs + nents > rm->m_total_sgs);
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if (WARN_ON(!ret))
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WARN_ON(!nents);
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if (rm->m_used_sgs + nents > rm->m_total_sgs)
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return NULL;
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return NULL;
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if (nents <= 0) {
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pr_warn("rds: alloc sgs failed! nents <= 0\n");
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*ret = -EINVAL;
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return NULL;
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}
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if (rm->m_used_sgs + nents > rm->m_total_sgs) {
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pr_warn("rds: alloc sgs failed! total %d used %d nents %d\n",
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rm->m_total_sgs, rm->m_used_sgs, nents);
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*ret = -ENOMEM;
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return NULL;
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}
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sg_ret = &sg_first[rm->m_used_sgs];
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sg_ret = &sg_first[rm->m_used_sgs];
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sg_init_table(sg_ret, nents);
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sg_init_table(sg_ret, nents);
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rm->m_used_sgs += nents;
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rm->m_used_sgs += nents;
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@ -332,6 +343,7 @@ struct rds_message *rds_message_map_pages(unsigned long *page_addrs, unsigned in
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unsigned int i;
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unsigned int i;
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int num_sgs = ceil(total_len, PAGE_SIZE);
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int num_sgs = ceil(total_len, PAGE_SIZE);
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int extra_bytes = num_sgs * sizeof(struct scatterlist);
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int extra_bytes = num_sgs * sizeof(struct scatterlist);
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int ret;
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rm = rds_message_alloc(extra_bytes, GFP_NOWAIT);
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rm = rds_message_alloc(extra_bytes, GFP_NOWAIT);
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if (!rm)
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if (!rm)
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@ -340,10 +352,10 @@ struct rds_message *rds_message_map_pages(unsigned long *page_addrs, unsigned in
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set_bit(RDS_MSG_PAGEVEC, &rm->m_flags);
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set_bit(RDS_MSG_PAGEVEC, &rm->m_flags);
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rm->m_inc.i_hdr.h_len = cpu_to_be32(total_len);
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rm->m_inc.i_hdr.h_len = cpu_to_be32(total_len);
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rm->data.op_nents = ceil(total_len, PAGE_SIZE);
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rm->data.op_nents = ceil(total_len, PAGE_SIZE);
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rm->data.op_sg = rds_message_alloc_sgs(rm, num_sgs);
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rm->data.op_sg = rds_message_alloc_sgs(rm, num_sgs, &ret);
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if (!rm->data.op_sg) {
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if (!rm->data.op_sg) {
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rds_message_put(rm);
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rds_message_put(rm);
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return ERR_PTR(-ENOMEM);
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return ERR_PTR(ret);
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}
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}
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for (i = 0; i < rm->data.op_nents; ++i) {
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for (i = 0; i < rm->data.op_nents; ++i) {
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@ -517,9 +517,10 @@ static int rds_rdma_pages(struct rds_iovec iov[], int nr_iovecs)
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return tot_pages;
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return tot_pages;
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}
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}
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int rds_rdma_extra_size(struct rds_rdma_args *args)
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int rds_rdma_extra_size(struct rds_rdma_args *args,
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struct rds_iov_vector *iov)
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{
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{
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struct rds_iovec vec;
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struct rds_iovec *vec;
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struct rds_iovec __user *local_vec;
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struct rds_iovec __user *local_vec;
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int tot_pages = 0;
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int tot_pages = 0;
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unsigned int nr_pages;
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unsigned int nr_pages;
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@ -530,13 +531,23 @@ int rds_rdma_extra_size(struct rds_rdma_args *args)
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if (args->nr_local == 0)
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if (args->nr_local == 0)
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return -EINVAL;
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return -EINVAL;
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/* figure out the number of pages in the vector */
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iov->iov = kcalloc(args->nr_local,
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for (i = 0; i < args->nr_local; i++) {
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sizeof(struct rds_iovec),
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if (copy_from_user(&vec, &local_vec[i],
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GFP_KERNEL);
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sizeof(struct rds_iovec)))
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if (!iov->iov)
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return -EFAULT;
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return -ENOMEM;
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nr_pages = rds_pages_in_vec(&vec);
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vec = &iov->iov[0];
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if (copy_from_user(vec, local_vec, args->nr_local *
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sizeof(struct rds_iovec)))
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return -EFAULT;
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iov->len = args->nr_local;
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/* figure out the number of pages in the vector */
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for (i = 0; i < args->nr_local; i++, vec++) {
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nr_pages = rds_pages_in_vec(vec);
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if (nr_pages == 0)
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if (nr_pages == 0)
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return -EINVAL;
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return -EINVAL;
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@ -558,15 +569,15 @@ int rds_rdma_extra_size(struct rds_rdma_args *args)
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* Extract all arguments and set up the rdma_op
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* Extract all arguments and set up the rdma_op
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*/
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*/
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int rds_cmsg_rdma_args(struct rds_sock *rs, struct rds_message *rm,
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int rds_cmsg_rdma_args(struct rds_sock *rs, struct rds_message *rm,
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struct cmsghdr *cmsg)
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struct cmsghdr *cmsg,
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struct rds_iov_vector *vec)
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{
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{
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struct rds_rdma_args *args;
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struct rds_rdma_args *args;
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struct rm_rdma_op *op = &rm->rdma;
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struct rm_rdma_op *op = &rm->rdma;
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int nr_pages;
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int nr_pages;
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unsigned int nr_bytes;
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unsigned int nr_bytes;
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struct page **pages = NULL;
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struct page **pages = NULL;
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struct rds_iovec iovstack[UIO_FASTIOV], *iovs = iovstack;
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struct rds_iovec *iovs;
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int iov_size;
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unsigned int i, j;
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unsigned int i, j;
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int ret = 0;
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int ret = 0;
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@ -586,31 +597,23 @@ int rds_cmsg_rdma_args(struct rds_sock *rs, struct rds_message *rm,
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goto out_ret;
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goto out_ret;
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}
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}
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/* Check whether to allocate the iovec area */
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if (vec->len != args->nr_local) {
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iov_size = args->nr_local * sizeof(struct rds_iovec);
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ret = -EINVAL;
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if (args->nr_local > UIO_FASTIOV) {
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goto out_ret;
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iovs = sock_kmalloc(rds_rs_to_sk(rs), iov_size, GFP_KERNEL);
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if (!iovs) {
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ret = -ENOMEM;
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goto out_ret;
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}
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}
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}
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if (copy_from_user(iovs, (struct rds_iovec __user *)(unsigned long) args->local_vec_addr, iov_size)) {
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iovs = vec->iov;
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ret = -EFAULT;
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goto out;
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}
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nr_pages = rds_rdma_pages(iovs, args->nr_local);
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nr_pages = rds_rdma_pages(iovs, args->nr_local);
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if (nr_pages < 0) {
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if (nr_pages < 0) {
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ret = -EINVAL;
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ret = -EINVAL;
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goto out;
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goto out_ret;
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}
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}
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pages = kcalloc(nr_pages, sizeof(struct page *), GFP_KERNEL);
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pages = kcalloc(nr_pages, sizeof(struct page *), GFP_KERNEL);
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if (!pages) {
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if (!pages) {
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ret = -ENOMEM;
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ret = -ENOMEM;
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goto out;
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goto out_ret;
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}
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}
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op->op_write = !!(args->flags & RDS_RDMA_READWRITE);
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op->op_write = !!(args->flags & RDS_RDMA_READWRITE);
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@ -620,11 +623,9 @@ int rds_cmsg_rdma_args(struct rds_sock *rs, struct rds_message *rm,
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op->op_active = 1;
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op->op_active = 1;
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op->op_recverr = rs->rs_recverr;
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op->op_recverr = rs->rs_recverr;
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WARN_ON(!nr_pages);
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WARN_ON(!nr_pages);
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op->op_sg = rds_message_alloc_sgs(rm, nr_pages);
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op->op_sg = rds_message_alloc_sgs(rm, nr_pages, &ret);
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if (!op->op_sg) {
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if (!op->op_sg)
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ret = -ENOMEM;
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goto out_pages;
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goto out;
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}
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if (op->op_notify || op->op_recverr) {
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if (op->op_notify || op->op_recverr) {
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/* We allocate an uninitialized notifier here, because
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/* We allocate an uninitialized notifier here, because
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@ -635,7 +636,7 @@ int rds_cmsg_rdma_args(struct rds_sock *rs, struct rds_message *rm,
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op->op_notifier = kmalloc(sizeof(struct rds_notifier), GFP_KERNEL);
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op->op_notifier = kmalloc(sizeof(struct rds_notifier), GFP_KERNEL);
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if (!op->op_notifier) {
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if (!op->op_notifier) {
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ret = -ENOMEM;
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ret = -ENOMEM;
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goto out;
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goto out_pages;
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}
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}
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op->op_notifier->n_user_token = args->user_token;
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op->op_notifier->n_user_token = args->user_token;
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op->op_notifier->n_status = RDS_RDMA_SUCCESS;
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op->op_notifier->n_status = RDS_RDMA_SUCCESS;
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@ -681,7 +682,7 @@ int rds_cmsg_rdma_args(struct rds_sock *rs, struct rds_message *rm,
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*/
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*/
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ret = rds_pin_pages(iov->addr, nr, pages, !op->op_write);
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ret = rds_pin_pages(iov->addr, nr, pages, !op->op_write);
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if (ret < 0)
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if (ret < 0)
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goto out;
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goto out_pages;
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else
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else
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ret = 0;
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ret = 0;
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@ -714,13 +715,11 @@ int rds_cmsg_rdma_args(struct rds_sock *rs, struct rds_message *rm,
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nr_bytes,
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nr_bytes,
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(unsigned int) args->remote_vec.bytes);
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(unsigned int) args->remote_vec.bytes);
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ret = -EINVAL;
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ret = -EINVAL;
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goto out;
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goto out_pages;
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}
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}
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op->op_bytes = nr_bytes;
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op->op_bytes = nr_bytes;
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out:
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out_pages:
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if (iovs != iovstack)
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sock_kfree_s(rds_rs_to_sk(rs), iovs, iov_size);
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kfree(pages);
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kfree(pages);
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out_ret:
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out_ret:
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if (ret)
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if (ret)
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@ -838,11 +837,9 @@ int rds_cmsg_atomic(struct rds_sock *rs, struct rds_message *rm,
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rm->atomic.op_silent = !!(args->flags & RDS_RDMA_SILENT);
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rm->atomic.op_silent = !!(args->flags & RDS_RDMA_SILENT);
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rm->atomic.op_active = 1;
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rm->atomic.op_active = 1;
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rm->atomic.op_recverr = rs->rs_recverr;
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rm->atomic.op_recverr = rs->rs_recverr;
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rm->atomic.op_sg = rds_message_alloc_sgs(rm, 1);
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rm->atomic.op_sg = rds_message_alloc_sgs(rm, 1, &ret);
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if (!rm->atomic.op_sg) {
|
if (!rm->atomic.op_sg)
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ret = -ENOMEM;
|
|
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goto err;
|
goto err;
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}
|
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||||||
|
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||||||
/* verify 8 byte-aligned */
|
/* verify 8 byte-aligned */
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if (args->local_addr & 0x7) {
|
if (args->local_addr & 0x7) {
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||||||
|
|
|
@ -386,6 +386,18 @@ static inline void rds_message_zcopy_queue_init(struct rds_msg_zcopy_queue *q)
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INIT_LIST_HEAD(&q->zcookie_head);
|
INIT_LIST_HEAD(&q->zcookie_head);
|
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}
|
}
|
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|
|
||||||
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struct rds_iov_vector {
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|
struct rds_iovec *iov;
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int len;
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};
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|
|
||||||
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struct rds_iov_vector_arr {
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|
struct rds_iov_vector *vec;
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|
int len;
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|
int indx;
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|
int incr;
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|
};
|
||||||
|
|
||||||
struct rds_message {
|
struct rds_message {
|
||||||
refcount_t m_refcount;
|
refcount_t m_refcount;
|
||||||
struct list_head m_sock_item;
|
struct list_head m_sock_item;
|
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|
@ -827,7 +839,8 @@ rds_conn_connecting(struct rds_connection *conn)
|
||||||
|
|
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/* message.c */
|
/* message.c */
|
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struct rds_message *rds_message_alloc(unsigned int nents, gfp_t gfp);
|
struct rds_message *rds_message_alloc(unsigned int nents, gfp_t gfp);
|
||||||
struct scatterlist *rds_message_alloc_sgs(struct rds_message *rm, int nents);
|
struct scatterlist *rds_message_alloc_sgs(struct rds_message *rm, int nents,
|
||||||
|
int *ret);
|
||||||
int rds_message_copy_from_user(struct rds_message *rm, struct iov_iter *from,
|
int rds_message_copy_from_user(struct rds_message *rm, struct iov_iter *from,
|
||||||
bool zcopy);
|
bool zcopy);
|
||||||
struct rds_message *rds_message_map_pages(unsigned long *page_addrs, unsigned int total_len);
|
struct rds_message *rds_message_map_pages(unsigned long *page_addrs, unsigned int total_len);
|
||||||
|
@ -904,13 +917,13 @@ int rds_get_mr(struct rds_sock *rs, char __user *optval, int optlen);
|
||||||
int rds_get_mr_for_dest(struct rds_sock *rs, char __user *optval, int optlen);
|
int rds_get_mr_for_dest(struct rds_sock *rs, char __user *optval, int optlen);
|
||||||
int rds_free_mr(struct rds_sock *rs, char __user *optval, int optlen);
|
int rds_free_mr(struct rds_sock *rs, char __user *optval, int optlen);
|
||||||
void rds_rdma_drop_keys(struct rds_sock *rs);
|
void rds_rdma_drop_keys(struct rds_sock *rs);
|
||||||
int rds_rdma_extra_size(struct rds_rdma_args *args);
|
int rds_rdma_extra_size(struct rds_rdma_args *args,
|
||||||
int rds_cmsg_rdma_args(struct rds_sock *rs, struct rds_message *rm,
|
struct rds_iov_vector *iov);
|
||||||
struct cmsghdr *cmsg);
|
|
||||||
int rds_cmsg_rdma_dest(struct rds_sock *rs, struct rds_message *rm,
|
int rds_cmsg_rdma_dest(struct rds_sock *rs, struct rds_message *rm,
|
||||||
struct cmsghdr *cmsg);
|
struct cmsghdr *cmsg);
|
||||||
int rds_cmsg_rdma_args(struct rds_sock *rs, struct rds_message *rm,
|
int rds_cmsg_rdma_args(struct rds_sock *rs, struct rds_message *rm,
|
||||||
struct cmsghdr *cmsg);
|
struct cmsghdr *cmsg,
|
||||||
|
struct rds_iov_vector *vec);
|
||||||
int rds_cmsg_rdma_map(struct rds_sock *rs, struct rds_message *rm,
|
int rds_cmsg_rdma_map(struct rds_sock *rs, struct rds_message *rm,
|
||||||
struct cmsghdr *cmsg);
|
struct cmsghdr *cmsg);
|
||||||
void rds_rdma_free_op(struct rm_rdma_op *ro);
|
void rds_rdma_free_op(struct rm_rdma_op *ro);
|
||||||
|
|
|
@ -876,13 +876,18 @@ out:
|
||||||
* rds_message is getting to be quite complicated, and we'd like to allocate
|
* rds_message is getting to be quite complicated, and we'd like to allocate
|
||||||
* it all in one go. This figures out how big it needs to be up front.
|
* it all in one go. This figures out how big it needs to be up front.
|
||||||
*/
|
*/
|
||||||
static int rds_rm_size(struct msghdr *msg, int num_sgs)
|
static int rds_rm_size(struct msghdr *msg, int num_sgs,
|
||||||
|
struct rds_iov_vector_arr *vct)
|
||||||
{
|
{
|
||||||
struct cmsghdr *cmsg;
|
struct cmsghdr *cmsg;
|
||||||
int size = 0;
|
int size = 0;
|
||||||
int cmsg_groups = 0;
|
int cmsg_groups = 0;
|
||||||
int retval;
|
int retval;
|
||||||
bool zcopy_cookie = false;
|
bool zcopy_cookie = false;
|
||||||
|
struct rds_iov_vector *iov, *tmp_iov;
|
||||||
|
|
||||||
|
if (num_sgs < 0)
|
||||||
|
return -EINVAL;
|
||||||
|
|
||||||
for_each_cmsghdr(cmsg, msg) {
|
for_each_cmsghdr(cmsg, msg) {
|
||||||
if (!CMSG_OK(msg, cmsg))
|
if (!CMSG_OK(msg, cmsg))
|
||||||
|
@ -893,8 +898,24 @@ static int rds_rm_size(struct msghdr *msg, int num_sgs)
|
||||||
|
|
||||||
switch (cmsg->cmsg_type) {
|
switch (cmsg->cmsg_type) {
|
||||||
case RDS_CMSG_RDMA_ARGS:
|
case RDS_CMSG_RDMA_ARGS:
|
||||||
|
if (vct->indx >= vct->len) {
|
||||||
|
vct->len += vct->incr;
|
||||||
|
tmp_iov =
|
||||||
|
krealloc(vct->vec,
|
||||||
|
vct->len *
|
||||||
|
sizeof(struct rds_iov_vector),
|
||||||
|
GFP_KERNEL);
|
||||||
|
if (!tmp_iov) {
|
||||||
|
vct->len -= vct->incr;
|
||||||
|
return -ENOMEM;
|
||||||
|
}
|
||||||
|
vct->vec = tmp_iov;
|
||||||
|
}
|
||||||
|
iov = &vct->vec[vct->indx];
|
||||||
|
memset(iov, 0, sizeof(struct rds_iov_vector));
|
||||||
|
vct->indx++;
|
||||||
cmsg_groups |= 1;
|
cmsg_groups |= 1;
|
||||||
retval = rds_rdma_extra_size(CMSG_DATA(cmsg));
|
retval = rds_rdma_extra_size(CMSG_DATA(cmsg), iov);
|
||||||
if (retval < 0)
|
if (retval < 0)
|
||||||
return retval;
|
return retval;
|
||||||
size += retval;
|
size += retval;
|
||||||
|
@ -951,10 +972,11 @@ static int rds_cmsg_zcopy(struct rds_sock *rs, struct rds_message *rm,
|
||||||
}
|
}
|
||||||
|
|
||||||
static int rds_cmsg_send(struct rds_sock *rs, struct rds_message *rm,
|
static int rds_cmsg_send(struct rds_sock *rs, struct rds_message *rm,
|
||||||
struct msghdr *msg, int *allocated_mr)
|
struct msghdr *msg, int *allocated_mr,
|
||||||
|
struct rds_iov_vector_arr *vct)
|
||||||
{
|
{
|
||||||
struct cmsghdr *cmsg;
|
struct cmsghdr *cmsg;
|
||||||
int ret = 0;
|
int ret = 0, ind = 0;
|
||||||
|
|
||||||
for_each_cmsghdr(cmsg, msg) {
|
for_each_cmsghdr(cmsg, msg) {
|
||||||
if (!CMSG_OK(msg, cmsg))
|
if (!CMSG_OK(msg, cmsg))
|
||||||
|
@ -968,7 +990,10 @@ static int rds_cmsg_send(struct rds_sock *rs, struct rds_message *rm,
|
||||||
*/
|
*/
|
||||||
switch (cmsg->cmsg_type) {
|
switch (cmsg->cmsg_type) {
|
||||||
case RDS_CMSG_RDMA_ARGS:
|
case RDS_CMSG_RDMA_ARGS:
|
||||||
ret = rds_cmsg_rdma_args(rs, rm, cmsg);
|
if (ind >= vct->indx)
|
||||||
|
return -ENOMEM;
|
||||||
|
ret = rds_cmsg_rdma_args(rs, rm, cmsg, &vct->vec[ind]);
|
||||||
|
ind++;
|
||||||
break;
|
break;
|
||||||
|
|
||||||
case RDS_CMSG_RDMA_DEST:
|
case RDS_CMSG_RDMA_DEST:
|
||||||
|
@ -1084,6 +1109,11 @@ int rds_sendmsg(struct socket *sock, struct msghdr *msg, size_t payload_len)
|
||||||
sock_flag(rds_rs_to_sk(rs), SOCK_ZEROCOPY));
|
sock_flag(rds_rs_to_sk(rs), SOCK_ZEROCOPY));
|
||||||
int num_sgs = ceil(payload_len, PAGE_SIZE);
|
int num_sgs = ceil(payload_len, PAGE_SIZE);
|
||||||
int namelen;
|
int namelen;
|
||||||
|
struct rds_iov_vector_arr vct = {0};
|
||||||
|
int ind;
|
||||||
|
|
||||||
|
/* expect 1 RDMA CMSG per rds_sendmsg. can still grow if more needed. */
|
||||||
|
vct.incr = 1;
|
||||||
|
|
||||||
/* Mirror Linux UDP mirror of BSD error message compatibility */
|
/* Mirror Linux UDP mirror of BSD error message compatibility */
|
||||||
/* XXX: Perhaps MSG_MORE someday */
|
/* XXX: Perhaps MSG_MORE someday */
|
||||||
|
@ -1220,7 +1250,7 @@ int rds_sendmsg(struct socket *sock, struct msghdr *msg, size_t payload_len)
|
||||||
num_sgs = iov_iter_npages(&msg->msg_iter, INT_MAX);
|
num_sgs = iov_iter_npages(&msg->msg_iter, INT_MAX);
|
||||||
}
|
}
|
||||||
/* size of rm including all sgs */
|
/* size of rm including all sgs */
|
||||||
ret = rds_rm_size(msg, num_sgs);
|
ret = rds_rm_size(msg, num_sgs, &vct);
|
||||||
if (ret < 0)
|
if (ret < 0)
|
||||||
goto out;
|
goto out;
|
||||||
|
|
||||||
|
@ -1232,11 +1262,9 @@ int rds_sendmsg(struct socket *sock, struct msghdr *msg, size_t payload_len)
|
||||||
|
|
||||||
/* Attach data to the rm */
|
/* Attach data to the rm */
|
||||||
if (payload_len) {
|
if (payload_len) {
|
||||||
rm->data.op_sg = rds_message_alloc_sgs(rm, num_sgs);
|
rm->data.op_sg = rds_message_alloc_sgs(rm, num_sgs, &ret);
|
||||||
if (!rm->data.op_sg) {
|
if (!rm->data.op_sg)
|
||||||
ret = -ENOMEM;
|
|
||||||
goto out;
|
goto out;
|
||||||
}
|
|
||||||
ret = rds_message_copy_from_user(rm, &msg->msg_iter, zcopy);
|
ret = rds_message_copy_from_user(rm, &msg->msg_iter, zcopy);
|
||||||
if (ret)
|
if (ret)
|
||||||
goto out;
|
goto out;
|
||||||
|
@ -1270,7 +1298,7 @@ int rds_sendmsg(struct socket *sock, struct msghdr *msg, size_t payload_len)
|
||||||
rm->m_conn_path = cpath;
|
rm->m_conn_path = cpath;
|
||||||
|
|
||||||
/* Parse any control messages the user may have included. */
|
/* Parse any control messages the user may have included. */
|
||||||
ret = rds_cmsg_send(rs, rm, msg, &allocated_mr);
|
ret = rds_cmsg_send(rs, rm, msg, &allocated_mr, &vct);
|
||||||
if (ret) {
|
if (ret) {
|
||||||
/* Trigger connection so that its ready for the next retry */
|
/* Trigger connection so that its ready for the next retry */
|
||||||
if (ret == -EAGAIN)
|
if (ret == -EAGAIN)
|
||||||
|
@ -1348,9 +1376,18 @@ int rds_sendmsg(struct socket *sock, struct msghdr *msg, size_t payload_len)
|
||||||
if (ret)
|
if (ret)
|
||||||
goto out;
|
goto out;
|
||||||
rds_message_put(rm);
|
rds_message_put(rm);
|
||||||
|
|
||||||
|
for (ind = 0; ind < vct.indx; ind++)
|
||||||
|
kfree(vct.vec[ind].iov);
|
||||||
|
kfree(vct.vec);
|
||||||
|
|
||||||
return payload_len;
|
return payload_len;
|
||||||
|
|
||||||
out:
|
out:
|
||||||
|
for (ind = 0; ind < vct.indx; ind++)
|
||||||
|
kfree(vct.vec[ind].iov);
|
||||||
|
kfree(vct.vec);
|
||||||
|
|
||||||
/* If the user included a RDMA_MAP cmsg, we allocated a MR on the fly.
|
/* If the user included a RDMA_MAP cmsg, we allocated a MR on the fly.
|
||||||
* If the sendmsg goes through, we keep the MR. If it fails with EAGAIN
|
* If the sendmsg goes through, we keep the MR. If it fails with EAGAIN
|
||||||
* or in any other way, we need to destroy the MR again */
|
* or in any other way, we need to destroy the MR again */
|
||||||
|
|
Loading…
Reference in New Issue