diff options
| author |   Varun Prakash <varun@chelsio.com> | 2016-09-13 21:24:00 +0530 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-09-15 20:49:20 -0400 |
| commit | 44c6d06992ac663e5163bdbe00844cb845ed5703 (patch) | |
| tree | 3f88dc3159752fddf5b06345fb6ff2fb564101fa /drivers/net/ethernet/chelsio | |
| parent | libcxgb,iw_cxgb4,cxgbit: add cxgb_is_neg_adv() (diff) | |
| download | linux-dev-44c6d06992ac663e5163bdbe00844cb845ed5703.tar.xz linux-dev-44c6d06992ac663e5163bdbe00844cb845ed5703.zip | |
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@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/chelsio')
| -rw-r--r-- | drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.h b/drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.h index 57fcc9899234..7fb4feb3c221 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 |