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Date: Tue, 13 Sep 2016 21:24:00 +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 05/11] libcxgb,iw_cxgb4,cxgbit: add cxgb_best_mtu()
Add cxgb_best_mtu() in libcxgb_cm.h 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 | 32 +++++++----------------
drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.h | 18 +++++++++++++
drivers/target/iscsi/cxgbit/cxgbit_cm.c | 20 +++-----------
3 files changed, 30 insertions(+), 40 deletions(-)
diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c
index b35fdc0..c3c678f 100644
--- a/drivers/infiniband/hw/cxgb4/cm.c
+++ b/drivers/infiniband/hw/cxgb4/cm.c
@@ -677,20 +677,6 @@ static int send_abort(struct c4iw_ep *ep)
return c4iw_l2t_send(&ep->com.dev->rdev, req_skb, ep->l2t);
}
-static void best_mtu(const unsigned short *mtus, unsigned short mtu,
- unsigned int *idx, int use_ts, int ipv6)
-{
- unsigned short hdr_size = (ipv6 ?
- sizeof(struct ipv6hdr) :
- sizeof(struct iphdr)) +
- sizeof(struct tcphdr) +
- (use_ts ?
- round_up(TCPOLEN_TIMESTAMP, 4) : 0);
- unsigned short data_size = mtu - hdr_size;
-
- cxgb4_best_aligned_mtu(mtus, hdr_size, data_size, 8, idx);
-}
-
static int send_connect(struct c4iw_ep *ep)
{
struct cpl_act_open_req *req = NULL;
@@ -750,9 +736,9 @@ static int send_connect(struct c4iw_ep *ep)
}
set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx);
- best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx,
- enable_tcp_timestamps,
- (AF_INET == ep->com.remote_addr.ss_family) ? 0 : 1);
+ cxgb_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx,
+ enable_tcp_timestamps,
+ (ep->com.remote_addr.ss_family == AF_INET) ? 0 : 1);
wscale = compute_wscale(rcv_win);
/*
@@ -1930,9 +1916,9 @@ static int send_fw_act_open_req(struct c4iw_ep *ep, unsigned int atid)
htons(FW_OFLD_CONNECTION_WR_CPLRXDATAACK_F);
req->tcb.tx_max = (__force __be32) jiffies;
req->tcb.rcv_adv = htons(1);
- best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx,
- enable_tcp_timestamps,
- (AF_INET == ep->com.remote_addr.ss_family) ? 0 : 1);
+ cxgb_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx,
+ enable_tcp_timestamps,
+ (ep->com.remote_addr.ss_family == AF_INET) ? 0 : 1);
wscale = compute_wscale(rcv_win);
/*
@@ -2374,9 +2360,9 @@ static int accept_cr(struct c4iw_ep *ep, struct sk_buff *skb,
OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL,
ep->hwtid));
- best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx,
- enable_tcp_timestamps && req->tcpopt.tstamp,
- (AF_INET == ep->com.remote_addr.ss_family) ? 0 : 1);
+ cxgb_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx,
+ enable_tcp_timestamps && req->tcpopt.tstamp,
+ (ep->com.remote_addr.ss_family == AF_INET) ? 0 : 1);
wscale = compute_wscale(rcv_win);
/*
diff --git a/drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.h b/drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.h
index 57fcc98..7fb4feb 100644
--- a/drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.h
+++ b/drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.h
@@ -33,6 +33,9 @@
#ifndef __LIBCXGB_CM_H__
#define __LIBCXGB_CM_H__
+
+#include <net/tcp.h>
+
#include <cxgb4.h>
#include <t4_msg.h>
@@ -56,4 +59,19 @@ static inline bool cxgb_is_neg_adv(unsigned int status)
status == CPL_ERR_PERSIST_NEG_ADVICE ||
status == CPL_ERR_KEEPALV_NEG_ADVICE;
}
+
+static inline void
+cxgb_best_mtu(const unsigned short *mtus, unsigned short mtu,
+ unsigned int *idx, int use_ts, int ipv6)
+{
+ unsigned short hdr_size = (ipv6 ?
+ sizeof(struct ipv6hdr) :
+ sizeof(struct iphdr)) +
+ sizeof(struct tcphdr) +
+ (use_ts ?
+ round_up(TCPOLEN_TIMESTAMP, 4) : 0);
+ unsigned short data_size = mtu - hdr_size;
+
+ cxgb4_best_aligned_mtu(mtus, hdr_size, data_size, 8, idx);
+}
#endif
diff --git a/drivers/target/iscsi/cxgbit/cxgbit_cm.c b/drivers/target/iscsi/cxgbit/cxgbit_cm.c
index c46bdd5..b09c09b 100644
--- a/drivers/target/iscsi/cxgbit/cxgbit_cm.c
+++ b/drivers/target/iscsi/cxgbit/cxgbit_cm.c
@@ -997,20 +997,6 @@ cxgbit_l2t_send(struct cxgbit_device *cdev, struct sk_buff *skb,
return ret < 0 ? ret : 0;
}
-static void
-cxgbit_best_mtu(const unsigned short *mtus, unsigned short mtu,
- unsigned int *idx, int use_ts, int ipv6)
-{
- unsigned short hdr_size = (ipv6 ? sizeof(struct ipv6hdr) :
- sizeof(struct iphdr)) +
- sizeof(struct tcphdr) +
- (use_ts ? round_up(TCPOLEN_TIMESTAMP,
- 4) : 0);
- unsigned short data_size = mtu - hdr_size;
-
- cxgb4_best_aligned_mtu(mtus, hdr_size, data_size, 8, idx);
-}
-
static void cxgbit_send_rx_credits(struct cxgbit_sock *csk, struct sk_buff *skb)
{
if (csk->com.state != CSK_STATE_ESTABLISHED) {
@@ -1135,9 +1121,9 @@ cxgbit_pass_accept_rpl(struct cxgbit_sock *csk, struct cpl_pass_accept_req *req)
INIT_TP_WR(rpl5, csk->tid);
OPCODE_TID(rpl5) = cpu_to_be32(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL,
csk->tid));
- cxgbit_best_mtu(csk->com.cdev->lldi.mtus, csk->mtu, &mtu_idx,
- req->tcpopt.tstamp,
- (csk->com.remote_addr.ss_family == AF_INET) ? 0 : 1);
+ cxgb_best_mtu(csk->com.cdev->lldi.mtus, csk->mtu, &mtu_idx,
+ req->tcpopt.tstamp,
+ (csk->com.remote_addr.ss_family == AF_INET) ? 0 : 1);
wscale = cxgbit_compute_wscale(csk->rcv_win);
/*
* Specify the largest window that will fit in opt0. The
--
2.0.2
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