Hello.
On 12/09/2014 08:32 PM, Karen Xie wrote:
[PATCH net v3 1/6] cxgb4i: fix tx credit calculation
From: Karen Xie <[email protected]>
- Only data skbs need the wr header added while control skbs do not. Make sure
they are treated differently.
- Any credit related checking should be done before adding the wr header.
Looks like a spearate issue deserving its own patch?
- Fixed compiler warning resulted from added cxgbi_skb_test_flag() call in
is_ofld_imm().
Isn't it called cxgbi_skcb_test_flag()?
Signed-off-by: Karen Xie <[email protected]>
---
drivers/scsi/cxgbi/cxgb4i/cxgb4i.c | 26 +++++++++++++++++---------
drivers/scsi/cxgbi/libcxgbi.h | 4 ++--
2 files changed, 19 insertions(+), 11 deletions(-)
diff --git a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c
b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c
index 1508125..5c3f15d 100644
--- a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c
+++ b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c
[...]
@@ -544,15 +548,17 @@ static inline void make_tx_data_wr(struct cxgbi_sock
*csk, struct sk_buff *skb,
unsigned int submode = cxgbi_skcb_ulp_mode(skb) & 3;
unsigned int wr_ulp_mode = 0;
- req = (struct fw_ofld_tx_data_wr *)__skb_push(skb, sizeof(*req));
-
Perhaps it makes sense to store the result of is_ofld_imm() before
__skb_push() call
instead of duplicating the same call in 2 branches?
if (is_ofld_imm(skb)) {
+ req = (struct fw_ofld_tx_data_wr *)__skb_push(skb,
+ sizeof(*req));
The continuation line should start right under 'skb' on the previous line.
req->op_to_immdlen = htonl(FW_WR_OP(FW_OFLD_TX_DATA_WR) |
FW_WR_COMPL(1) |
FW_WR_IMMDLEN(dlen));
req->flowid_len16 = htonl(FW_WR_FLOWID(csk->tid) |
FW_WR_LEN16(credits));
} else {
+ req = (struct fw_ofld_tx_data_wr *)__skb_push(skb,
+ sizeof(*req));
Likewise.
req->op_to_immdlen =
cpu_to_be32(FW_WR_OP(FW_OFLD_TX_DATA_WR) |
FW_WR_COMPL(1) |
@@ -597,12 +603,14 @@ static int push_tx_frames(struct cxgbi_sock *csk, int
req_completion)
skb_reset_transport_header(skb);
if (is_ofld_imm(skb))
- credits_needed = DIV_ROUND_UP(dlen +
- sizeof(struct fw_ofld_tx_data_wr), 16);
+ credits_needed = DIV_ROUND_UP(dlen, 16);
else
- credits_needed = DIV_ROUND_UP(8*calc_tx_flits_ofld(skb)
- + sizeof(struct fw_ofld_tx_data_wr),
- 16);
+ credits_needed = DIV_ROUND_UP(8*calc_tx_flits_ofld(skb),
It would have been good if you added spaces around *, while at it, to keep
it consistent with the general kernel coding style...
[...]
WBR, Sergei
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