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iw_cxgb4: Take clip reference before starting IPv6 listen

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The h/w is designed in such a way that, if you do anything IPv6
related, a valid clip entry must be there. So take clip reference
before creating IPv6 listening servers, and then if we fail to
create server, release the clip entry.

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Hariprasad S 2016-01-13 10:03:14 +05:30 committed by Doug Ledford
parent 4275a5b200
commit 28de1f7437
1 changed files with 10 additions and 4 deletions
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14
drivers/infiniband/hw/cxgb4/cm.c
View file

@ -3271,6 +3271,12 @@ static int create_server6(struct c4iw_dev *dev, struct c4iw_listen_ep *ep)
struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)
&ep->com.mapped_local_addr;
if (ipv6_addr_type(&sin6->sin6_addr) != IPV6_ADDR_ANY) {
err = cxgb4_clip_get(ep->com.dev->rdev.lldi.ports[0],
(const u32 *)&sin6->sin6_addr.s6_addr, 1);
if (err)
return err;
}
c4iw_init_wr_wait(&ep->com.wr_wait);
err = cxgb4_create_server6(ep->com.dev->rdev.lldi.ports[0],
ep->stid, &sin6->sin6_addr,
@ -3282,13 +3288,13 @@ static int create_server6(struct c4iw_dev *dev, struct c4iw_listen_ep *ep)
0, 0, __func__);
else if (err > 0)
err = net_xmit_errno(err);
if (err)
if (err) {
cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0],
(const u32 *)&sin6->sin6_addr.s6_addr, 1);
pr_err("cxgb4_create_server6/filter failed err %d stid %d laddr %pI6 lport %d\n",
err, ep->stid,
sin6->sin6_addr.s6_addr, ntohs(sin6->sin6_port));
else
cxgb4_clip_get(ep->com.dev->rdev.lldi.ports[0],
(const u32 *)&sin6->sin6_addr.s6_addr, 1);
}
return err;
}