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libcxgb,iw_cxgb4,cxgbit: add cxgb_best_mtu()

Browse source 
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 <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Varun Prakash 2016-09-13 21:24:00 +05:30 • committed by David S. Miller
commit 44c6d06992
3 changed files with 30 additions and 40 deletions
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20
drivers/target/iscsi/cxgbit/cxgbit_cm.c
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@ -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