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iw_cxgb4: Add support for clip
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Add support for ipv6 address handling clip api provided by lld

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Hariprasad S authored and Doug Ledford committed Aug 29, 2015
1 parent 6c26a77 commit 84cc6ac
Showing 1 changed file with 72 additions and 4 deletions.
76 changes: 72 additions & 4 deletions drivers/infiniband/hw/cxgb4/cm.c
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Original file line number Diff line number Diff line change
Expand Up @@ -50,6 +50,7 @@
#include <rdma/ib_addr.h>

#include "iw_cxgb4.h"
#include "clip_tbl.h"

static char *states[] = {
"idle",
Expand Down Expand Up @@ -298,6 +299,16 @@ void _c4iw_free_ep(struct kref *kref)
if (test_bit(QP_REFERENCED, &ep->com.flags))
deref_qp(ep);
if (test_bit(RELEASE_RESOURCES, &ep->com.flags)) {
if (ep->com.remote_addr.ss_family == AF_INET6) {
struct sockaddr_in6 *sin6 =
(struct sockaddr_in6 *)
&ep->com.mapped_local_addr;

cxgb4_clip_release(
ep->com.dev->rdev.lldi.ports[0],
(const u32 *)&sin6->sin6_addr.s6_addr,
1);
}
remove_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep->hwtid);
cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, ep->hwtid);
dst_release(ep->dst);
Expand Down Expand Up @@ -442,6 +453,12 @@ static void act_open_req_arp_failure(void *handle, struct sk_buff *skb)
kfree_skb(skb);
connect_reply_upcall(ep, -EHOSTUNREACH);
state_set(&ep->com, DEAD);
if (ep->com.remote_addr.ss_family == AF_INET6) {
struct sockaddr_in6 *sin6 =
(struct sockaddr_in6 *)&ep->com.mapped_local_addr;
cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0],
(const u32 *)&sin6->sin6_addr.s6_addr, 1);
}
remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid);
cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid);
dst_release(ep->dst);
Expand Down Expand Up @@ -640,6 +657,7 @@ static int send_connect(struct c4iw_ep *ep)
struct sockaddr_in6 *ra6 = (struct sockaddr_in6 *)
&ep->com.mapped_remote_addr;
int win;
int ret;

wrlen = (ep->com.remote_addr.ss_family == AF_INET) ?
roundup(sizev4, 16) :
Expand Down Expand Up @@ -693,6 +711,11 @@ static int send_connect(struct c4iw_ep *ep)
opt2 |= CONG_CNTRL_V(CONG_ALG_TAHOE);
opt2 |= T5_ISS_F;
}

if (ep->com.remote_addr.ss_family == AF_INET6)
cxgb4_clip_get(ep->com.dev->rdev.lldi.ports[0],
(const u32 *)&la6->sin6_addr.s6_addr, 1);

t4_set_arp_err_handler(skb, ep, act_open_req_arp_failure);

if (is_t4(ep->com.dev->rdev.lldi.adapter_type)) {
Expand Down Expand Up @@ -790,7 +813,11 @@ static int send_connect(struct c4iw_ep *ep)
}

set_bit(ACT_OPEN_REQ, &ep->com.history);
return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
ret = c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
if (ret && ep->com.remote_addr.ss_family == AF_INET6)
cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0],
(const u32 *)&la6->sin6_addr.s6_addr, 1);
return ret;
}

static void send_mpa_req(struct c4iw_ep *ep, struct sk_buff *skb,
Expand Down Expand Up @@ -2091,6 +2118,15 @@ static int act_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
case CPL_ERR_CONN_EXIST:
if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) {
set_bit(ACT_RETRY_INUSE, &ep->com.history);
if (ep->com.remote_addr.ss_family == AF_INET6) {
struct sockaddr_in6 *sin6 =
(struct sockaddr_in6 *)
&ep->com.mapped_local_addr;
cxgb4_clip_release(
ep->com.dev->rdev.lldi.ports[0],
(const u32 *)
&sin6->sin6_addr.s6_addr, 1);
}
remove_handle(ep->com.dev, &ep->com.dev->atid_idr,
atid);
cxgb4_free_atid(t, atid);
Expand Down Expand Up @@ -2118,6 +2154,12 @@ static int act_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
connect_reply_upcall(ep, status2errno(status));
state_set(&ep->com, DEAD);

if (ep->com.remote_addr.ss_family == AF_INET6) {
struct sockaddr_in6 *sin6 =
(struct sockaddr_in6 *)&ep->com.mapped_local_addr;
cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0],
(const u32 *)&sin6->sin6_addr.s6_addr, 1);
}
if (status && act_open_has_tid(status))
cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, GET_TID(rpl));

Expand Down Expand Up @@ -2302,6 +2344,7 @@ static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb)
struct dst_entry *dst;
__u8 local_ip[16], peer_ip[16];
__be16 local_port, peer_port;
struct sockaddr_in6 *sin6;
int err;
u16 peer_mss = ntohs(req->tcpopt.mss);
int iptype;
Expand Down Expand Up @@ -2400,9 +2443,7 @@ static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb)
sin->sin_port = peer_port;
sin->sin_addr.s_addr = *(__be32 *)peer_ip;
} else {
struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)
&child_ep->com.mapped_local_addr;

sin6 = (struct sockaddr_in6 *)&child_ep->com.mapped_local_addr;
sin6->sin6_family = PF_INET6;
sin6->sin6_port = local_port;
memcpy(sin6->sin6_addr.s6_addr, local_ip, 16);
Expand Down Expand Up @@ -2436,6 +2477,11 @@ static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb)
insert_handle(dev, &dev->hwtid_idr, child_ep, child_ep->hwtid);
accept_cr(child_ep, skb, req);
set_bit(PASS_ACCEPT_REQ, &child_ep->com.history);
if (iptype == 6) {
sin6 = (struct sockaddr_in6 *)&child_ep->com.mapped_local_addr;
cxgb4_clip_get(child_ep->com.dev->rdev.lldi.ports[0],
(const u32 *)&sin6->sin6_addr.s6_addr, 1);
}
goto out;
reject:
reject_cr(dev, hwtid, skb);
Expand Down Expand Up @@ -2672,6 +2718,15 @@ static int peer_abort(struct c4iw_dev *dev, struct sk_buff *skb)
if (release)
release_ep_resources(ep);
else if (ep->retry_with_mpa_v1) {
if (ep->com.remote_addr.ss_family == AF_INET6) {
struct sockaddr_in6 *sin6 =
(struct sockaddr_in6 *)
&ep->com.mapped_local_addr;
cxgb4_clip_release(
ep->com.dev->rdev.lldi.ports[0],
(const u32 *)&sin6->sin6_addr.s6_addr,
1);
}
remove_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep->hwtid);
cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, ep->hwtid);
dst_release(ep->dst);
Expand Down Expand Up @@ -3186,6 +3241,9 @@ static int create_server6(struct c4iw_dev *dev, struct c4iw_listen_ep *ep)
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;
}

Expand Down Expand Up @@ -3334,6 +3392,7 @@ int c4iw_destroy_listen(struct iw_cm_id *cm_id)
ep->com.dev->rdev.lldi.ports[0], ep->stid,
ep->com.dev->rdev.lldi.rxq_ids[0], 0);
} else {
struct sockaddr_in6 *sin6;
c4iw_init_wr_wait(&ep->com.wr_wait);
err = cxgb4_remove_server(
ep->com.dev->rdev.lldi.ports[0], ep->stid,
Expand All @@ -3342,6 +3401,9 @@ int c4iw_destroy_listen(struct iw_cm_id *cm_id)
goto done;
err = c4iw_wait_for_reply(&ep->com.dev->rdev, &ep->com.wr_wait,
0, 0, __func__);
sin6 = (struct sockaddr_in6 *)&ep->com.mapped_local_addr;
cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0],
(const u32 *)&sin6->sin6_addr.s6_addr, 1);
}
remove_handle(ep->com.dev, &ep->com.dev->stid_idr, ep->stid);
cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid,
Expand Down Expand Up @@ -3461,6 +3523,12 @@ static void active_ofld_conn_reply(struct c4iw_dev *dev, struct sk_buff *skb,
mutex_unlock(&dev->rdev.stats.lock);
connect_reply_upcall(ep, status2errno(req->retval));
state_set(&ep->com, DEAD);
if (ep->com.remote_addr.ss_family == AF_INET6) {
struct sockaddr_in6 *sin6 =
(struct sockaddr_in6 *)&ep->com.mapped_local_addr;
cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0],
(const u32 *)&sin6->sin6_addr.s6_addr, 1);
}
remove_handle(dev, &dev->atid_idr, atid);
cxgb4_free_atid(dev->rdev.lldi.tids, atid);
dst_release(ep->dst);
Expand Down

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