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Date: Tue, 13 Sep 2016 21:23:57 +0530
From: Varun Prakash <varun@...lsio.com>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org, linux-rdma@...r.kernel.org,
target-devel@...r.kernel.org, nab@...ux-iscsi.org,
dledford@...hat.com, swise@...ngridcomputing.com,
gerlitz.or@...il.com, indranil@...lsio.com, varun@...lsio.com
Subject: [net-next PATCH 02/11] libcxgb,iw_cxgb4,cxgbit: add cxgb_find_route()
Add cxgb_find_route() in libcxgb_cm.c to remove
it's duplicate definitions from cxgb4/cm.c and
cxgbit/cxgbit_cm.c.
Signed-off-by: Varun Prakash <varun@...lsio.com>
---
drivers/infiniband/hw/cxgb4/cm.c | 53 +++++++----------------
drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.c | 44 +++++++++++++++++++
drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.h | 4 ++
drivers/target/iscsi/cxgbit/cxgbit_cm.c | 36 +++------------
4 files changed, 69 insertions(+), 68 deletions(-)
diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c
index e591f61..02f5e20 100644
--- a/drivers/infiniband/hw/cxgb4/cm.c
+++ b/drivers/infiniband/hw/cxgb4/cm.c
@@ -505,32 +505,6 @@ out:
return dst;
}
-static struct dst_entry *find_route(struct c4iw_dev *dev, __be32 local_ip,
- __be32 peer_ip, __be16 local_port,
- __be16 peer_port, u8 tos)
-{
- struct rtable *rt;
- struct flowi4 fl4;
- struct neighbour *n;
-
- rt = ip_route_output_ports(&init_net, &fl4, NULL, peer_ip, local_ip,
- peer_port, local_port, IPPROTO_TCP,
- tos, 0);
- if (IS_ERR(rt))
- return NULL;
- n = dst_neigh_lookup(&rt->dst, &peer_ip);
- if (!n)
- return NULL;
- if (!our_interface(dev, n->dev) &&
- !(n->dev->flags & IFF_LOOPBACK)) {
- neigh_release(n);
- dst_release(&rt->dst);
- return NULL;
- }
- neigh_release(n);
- return &rt->dst;
-}
-
static void arp_failure_discard(void *handle, struct sk_buff *skb)
{
pr_err(MOD "ARP failure\n");
@@ -2215,9 +2189,11 @@ static int c4iw_reconnect(struct c4iw_ep *ep)
/* find a route */
if (ep->com.cm_id->m_local_addr.ss_family == AF_INET) {
- ep->dst = find_route(ep->com.dev, laddr->sin_addr.s_addr,
- raddr->sin_addr.s_addr, laddr->sin_port,
- raddr->sin_port, ep->com.cm_id->tos);
+ ep->dst = cxgb_find_route(&ep->com.dev->rdev.lldi, get_real_dev,
+ laddr->sin_addr.s_addr,
+ raddr->sin_addr.s_addr,
+ laddr->sin_port,
+ raddr->sin_port, ep->com.cm_id->tos);
iptype = 4;
ra = (__u8 *)&raddr->sin_addr;
} else {
@@ -2556,9 +2532,9 @@ static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb)
, __func__, parent_ep, hwtid,
local_ip, peer_ip, ntohs(local_port),
ntohs(peer_port), peer_mss);
- dst = find_route(dev, *(__be32 *)local_ip, *(__be32 *)peer_ip,
- local_port, peer_port,
- tos);
+ dst = cxgb_find_route(&dev->rdev.lldi, get_real_dev,
+ *(__be32 *)local_ip, *(__be32 *)peer_ip,
+ local_port, peer_port, tos);
} else {
PDBG("%s parent ep %p hwtid %u laddr %pI6 raddr %pI6 lport %d rport %d peer_mss %d\n"
, __func__, parent_ep, hwtid,
@@ -3340,9 +3316,11 @@ int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
PDBG("%s saddr %pI4 sport 0x%x raddr %pI4 rport 0x%x\n",
__func__, &laddr->sin_addr, ntohs(laddr->sin_port),
ra, ntohs(raddr->sin_port));
- ep->dst = find_route(dev, laddr->sin_addr.s_addr,
- raddr->sin_addr.s_addr, laddr->sin_port,
- raddr->sin_port, cm_id->tos);
+ ep->dst = cxgb_find_route(&dev->rdev.lldi, get_real_dev,
+ laddr->sin_addr.s_addr,
+ raddr->sin_addr.s_addr,
+ laddr->sin_port,
+ raddr->sin_port, cm_id->tos);
} else {
iptype = 6;
ra = (__u8 *)&raddr6->sin6_addr;
@@ -4006,8 +3984,9 @@ static int rx_pkt(struct c4iw_dev *dev, struct sk_buff *skb)
ntohl(iph->daddr), ntohs(tcph->dest), ntohl(iph->saddr),
ntohs(tcph->source), iph->tos);
- dst = find_route(dev, iph->daddr, iph->saddr, tcph->dest, tcph->source,
- iph->tos);
+ dst = cxgb_find_route(&dev->rdev.lldi, get_real_dev,
+ iph->daddr, iph->saddr, tcph->dest,
+ tcph->source, iph->tos);
if (!dst) {
pr_err("%s - failed to find dst entry!\n",
__func__);
diff --git a/drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.c b/drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.c
index d7342bb..a318412 100644
--- a/drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.c
+++ b/drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.c
@@ -32,6 +32,7 @@
#include <linux/tcp.h>
#include <linux/ipv6.h>
+#include <net/route.h>
#include "libcxgb_cm.h"
@@ -70,3 +71,46 @@ cxgb_get_4tuple(struct cpl_pass_accept_req *req, enum chip_type type,
*local_port = tcp->dest;
}
EXPORT_SYMBOL(cxgb_get_4tuple);
+
+static bool
+cxgb_our_interface(struct cxgb4_lld_info *lldi,
+ struct net_device *(*get_real_dev)(struct net_device *),
+ struct net_device *egress_dev)
+{
+ int i;
+
+ egress_dev = get_real_dev(egress_dev);
+ for (i = 0; i < lldi->nports; i++)
+ if (lldi->ports[i] == egress_dev)
+ return true;
+ return false;
+}
+
+struct dst_entry *
+cxgb_find_route(struct cxgb4_lld_info *lldi,
+ struct net_device *(*get_real_dev)(struct net_device *),
+ __be32 local_ip, __be32 peer_ip, __be16 local_port,
+ __be16 peer_port, u8 tos)
+{
+ struct rtable *rt;
+ struct flowi4 fl4;
+ struct neighbour *n;
+
+ rt = ip_route_output_ports(&init_net, &fl4, NULL, peer_ip, local_ip,
+ peer_port, local_port, IPPROTO_TCP,
+ tos, 0);
+ if (IS_ERR(rt))
+ return NULL;
+ n = dst_neigh_lookup(&rt->dst, &peer_ip);
+ if (!n)
+ return NULL;
+ if (!cxgb_our_interface(lldi, get_real_dev, n->dev) &&
+ !(n->dev->flags & IFF_LOOPBACK)) {
+ neigh_release(n);
+ dst_release(&rt->dst);
+ return NULL;
+ }
+ neigh_release(n);
+ return &rt->dst;
+}
+EXPORT_SYMBOL(cxgb_find_route);
diff --git a/drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.h b/drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.h
index 2ab8d9b..fe69161 100644
--- a/drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.h
+++ b/drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.h
@@ -39,4 +39,8 @@
void
cxgb_get_4tuple(struct cpl_pass_accept_req *, enum chip_type,
int *, __u8 *, __u8 *, __be16 *, __be16 *);
+struct dst_entry *
+cxgb_find_route(struct cxgb4_lld_info *,
+ struct net_device *(*)(struct net_device *),
+ __be32, __be32, __be16, __be16, u8);
#endif
diff --git a/drivers/target/iscsi/cxgbit/cxgbit_cm.c b/drivers/target/iscsi/cxgbit/cxgbit_cm.c
index 8bb5a25..49b24b9 100644
--- a/drivers/target/iscsi/cxgbit/cxgbit_cm.c
+++ b/drivers/target/iscsi/cxgbit/cxgbit_cm.c
@@ -830,33 +830,6 @@ out:
return dst;
}
-static struct dst_entry *
-cxgbit_find_route(struct cxgbit_device *cdev, __be32 local_ip, __be32 peer_ip,
- __be16 local_port, __be16 peer_port, u8 tos)
-{
- struct rtable *rt;
- struct flowi4 fl4;
- struct neighbour *n;
-
- rt = ip_route_output_ports(&init_net, &fl4, NULL, peer_ip,
- local_ip,
- peer_port, local_port, IPPROTO_TCP,
- tos, 0);
- if (IS_ERR(rt))
- return NULL;
- n = dst_neigh_lookup(&rt->dst, &peer_ip);
- if (!n)
- return NULL;
- if (!cxgbit_our_interface(cdev, n->dev) &&
- !(n->dev->flags & IFF_LOOPBACK)) {
- neigh_release(n);
- dst_release(&rt->dst);
- return NULL;
- }
- neigh_release(n);
- return &rt->dst;
-}
-
static void cxgbit_set_tcp_window(struct cxgbit_sock *csk, struct port_info *pi)
{
unsigned int linkspeed;
@@ -1315,10 +1288,11 @@ cxgbit_pass_accept_req(struct cxgbit_device *cdev, struct sk_buff *skb)
, __func__, cnp, tid,
local_ip, peer_ip, ntohs(local_port),
ntohs(peer_port), peer_mss);
- dst = cxgbit_find_route(cdev, *(__be32 *)local_ip,
- *(__be32 *)peer_ip,
- local_port, peer_port,
- PASS_OPEN_TOS_G(ntohl(req->tos_stid)));
+ dst = cxgb_find_route(&cdev->lldi, cxgbit_get_real_dev,
+ *(__be32 *)local_ip,
+ *(__be32 *)peer_ip,
+ local_port, peer_port,
+ PASS_OPEN_TOS_G(ntohl(req->tos_stid)));
} else {
pr_debug("%s parent sock %p tid %u laddr %pI6 raddr %pI6 "
"lport %d rport %d peer_mss %d\n"
--
2.0.2
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