From 28de1f74374da4f0f628b14bbccb07e5637d00b1 Mon Sep 17 00:00:00 2001 From: Hariprasad S Date: Wed, 13 Jan 2016 10:03:14 +0530 Subject: [PATCH] iw_cxgb4: Take clip reference before starting IPv6 listen 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 Acked-by: Steve Wise Signed-off-by: Doug Ledford --- drivers/infiniband/hw/cxgb4/cm.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c index c9cffced00ca..704680471567 100644 --- a/drivers/infiniband/hw/cxgb4/cm.c +++ b/drivers/infiniband/hw/cxgb4/cm.c @@ -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; }