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be2net: Fix a bug in Rx buffer posting

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The numPosted field in the ERX Doorbell register is 8-bits wide.
So the max buffers that we can post at a time is 255 and not 256
which we are doing currently.

Signed-off-by: Ajit Khaparde <ajit.khaparde@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ajit Khaparde 2015-04-08 16:59:48 -05:00 committed by David S. Miller
parent 5eeb292215
commit 69304cc986
2 changed files with 2 additions and 1 deletions
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1
drivers/net/ethernet/emulex/benet/be.h
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@ -97,6 +97,7 @@
#define BE_NAPI_WEIGHT 64
#define MAX_RX_POST BE_NAPI_WEIGHT /* Frags posted at a time */
#define RX_FRAGS_REFILL_WM (RX_Q_LEN - MAX_RX_POST)
#define MAX_NUM_POST_ERX_DB 255u
#define MAX_VFS 30 /* Max VFs supported by BE3 FW */
#define FW_VER_LEN 32

2
drivers/net/ethernet/emulex/benet/be_main.c
View File

@ -2032,7 +2032,7 @@ static void be_post_rx_frags(struct be_rx_obj *rxo, gfp_t gfp, u32 frags_needed)
if (rxo->rx_post_starved)
rxo->rx_post_starved = false;
do {
notify = min(256u, posted);
notify = min(MAX_NUM_POST_ERX_DB, posted);
be_rxq_notify(adapter, rxq->id, notify);
posted -= notify;
} while (posted);