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RDMA/cma: Handle global/non-linklocal IPv6 addresses in cma_check_linklocal()

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If addr is not a linklocal address, the code incorrectly fails to
return and ends up assigning the scope ID to the scope id of the
address, which is wrong.  Fix by checking if it's a link local address
first, and immediately return 0 if not.

Signed-off-by: Somnath Kotur <somnath.kotur@emulex.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Somnath Kotur 2013-11-16 09:30:01 +05:30 committed by Roland Dreier
parent 7e22e91102
commit 5462eddd7a
1 changed files with 5 additions and 2 deletions
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7
drivers/infiniband/core/cma.c
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@ -2480,8 +2480,11 @@ static int cma_check_linklocal(struct rdma_dev_addr *dev_addr,
return 0;
sin6 = (struct sockaddr_in6 *) addr;
if ((ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL) &&
!sin6->sin6_scope_id)
if (!(ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL))
return 0;
if (!sin6->sin6_scope_id)
return -EINVAL;
dev_addr->bound_dev_if = sin6->sin6_scope_id;