net/smc: Refactor smc ism v2 capability handling
Encapsulate the smc ism v2 capability boolean value in a function for better information hiding. Signed-off-by: Guvenc Gulce <guvenc@linux.ibm.com> Signed-off-by: Karsten Graul <kgraul@linux.ibm.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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@ -668,7 +668,7 @@ static int smc_find_proposal_devices(struct smc_sock *smc,
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ini->smc_type_v1 = SMC_TYPE_N;
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} /* else RDMA is supported for this connection */
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}
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if (smc_ism_v2_capable && smc_find_ism_v2_device_clnt(smc, ini))
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if (smc_ism_is_v2_capable() && smc_find_ism_v2_device_clnt(smc, ini))
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ini->smc_type_v2 = SMC_TYPE_N;
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/* if neither ISM nor RDMA are supported, fallback */
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@ -920,7 +920,7 @@ static int smc_connect_check_aclc(struct smc_init_info *ini,
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/* perform steps before actually connecting */
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static int __smc_connect(struct smc_sock *smc)
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{
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u8 version = smc_ism_v2_capable ? SMC_V2 : SMC_V1;
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u8 version = smc_ism_is_v2_capable() ? SMC_V2 : SMC_V1;
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struct smc_clc_msg_accept_confirm_v2 *aclc2;
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struct smc_clc_msg_accept_confirm *aclc;
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struct smc_init_info *ini = NULL;
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@ -945,9 +945,9 @@ static int __smc_connect(struct smc_sock *smc)
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version);
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ini->smcd_version = SMC_V1;
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ini->smcd_version |= smc_ism_v2_capable ? SMC_V2 : 0;
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ini->smcd_version |= smc_ism_is_v2_capable() ? SMC_V2 : 0;
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ini->smc_type_v1 = SMC_TYPE_B;
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ini->smc_type_v2 = smc_ism_v2_capable ? SMC_TYPE_D : SMC_TYPE_N;
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ini->smc_type_v2 = smc_ism_is_v2_capable() ? SMC_TYPE_D : SMC_TYPE_N;
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/* get vlan id from IP device */
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if (smc_vlan_by_tcpsk(smc->clcsock, ini)) {
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@ -1355,7 +1355,7 @@ static int smc_listen_v2_check(struct smc_sock *new_smc,
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rc = SMC_CLC_DECL_PEERNOSMC;
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goto out;
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}
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if (!smc_ism_v2_capable) {
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if (!smc_ism_is_v2_capable()) {
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ini->smcd_version &= ~SMC_V2;
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rc = SMC_CLC_DECL_NOISM2SUPP;
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goto out;
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@ -1681,7 +1681,7 @@ static void smc_listen_work(struct work_struct *work)
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{
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struct smc_sock *new_smc = container_of(work, struct smc_sock,
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smc_listen_work);
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u8 version = smc_ism_v2_capable ? SMC_V2 : SMC_V1;
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u8 version = smc_ism_is_v2_capable() ? SMC_V2 : SMC_V1;
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struct socket *newclcsock = new_smc->clcsock;
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struct smc_clc_msg_accept_confirm *cclc;
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struct smc_clc_msg_proposal_area *buf;
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@ -21,7 +21,7 @@ struct smcd_dev_list smcd_dev_list = {
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.mutex = __MUTEX_INITIALIZER(smcd_dev_list.mutex)
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};
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bool smc_ism_v2_capable;
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static bool smc_ism_v2_capable;
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/* Test if an ISM communication is possible - same CPC */
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int smc_ism_cantalk(u64 peer_gid, unsigned short vlan_id, struct smcd_dev *smcd)
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@ -51,6 +51,12 @@ u16 smc_ism_get_chid(struct smcd_dev *smcd)
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return smcd->ops->get_chid(smcd);
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}
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/* HW supports ISM V2 and thus System EID is defined */
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bool smc_ism_is_v2_capable(void)
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{
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return smc_ism_v2_capable;
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}
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/* Set a connection using this DMBE. */
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void smc_ism_set_conn(struct smc_connection *conn)
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{
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@ -10,6 +10,7 @@
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#define SMCD_ISM_H
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#include <linux/uio.h>
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#include <linux/types.h>
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#include <linux/mutex.h>
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#include "smc.h"
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@ -20,9 +21,6 @@ struct smcd_dev_list { /* List of SMCD devices */
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};
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extern struct smcd_dev_list smcd_dev_list; /* list of smcd devices */
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extern bool smc_ism_v2_capable; /* HW supports ISM V2 and thus
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* System EID is defined
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*/
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struct smc_ism_vlanid { /* VLAN id set on ISM device */
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struct list_head list;
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@ -52,5 +50,6 @@ int smc_ism_write(struct smcd_dev *dev, const struct smc_ism_position *pos,
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int smc_ism_signal_shutdown(struct smc_link_group *lgr);
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void smc_ism_get_system_eid(struct smcd_dev *dev, u8 **eid);
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u16 smc_ism_get_chid(struct smcd_dev *dev);
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bool smc_ism_is_v2_capable(void);
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void smc_ism_init(void);
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#endif
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