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RDMA/irdma: Slightly optimize irdma_form_ah_cm_frame()

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There is no need to zero 'pktsize' bytes of 'buf', only the header needs
to be cleared, to be safe.
All the other bytes are already written with some memcpy() at the end of
the function.

Doing so also gives the opportunity to the compiler to avoid the memset()
call. It can be inlined now that the length is known as compile time.

Link: https://lore.kernel.org/r/098e3c397be0436f1867899245ecfe656c472110.1675369386.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Christophe JAILLET 2023-02-02 21:23:24 +01:00 committed by Jason Gunthorpe
parent 67a00d29c3
commit a2e20b29cf
1 changed files with 1 additions and 1 deletions
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2
drivers/infiniband/hw/irdma/cm.c
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@ -337,7 +337,7 @@ static struct irdma_puda_buf *irdma_form_ah_cm_frame(struct irdma_cm_node *cm_no
pktsize = sizeof(*tcph) + opts_len + hdr_len + pd_len;
memset(buf, 0, pktsize);
memset(buf, 0, sizeof(*tcph));
sqbuf->totallen = pktsize;
sqbuf->tcphlen = sizeof(*tcph) + opts_len;