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[V2,2/4] RDMA/siw: Reduce memory usage of struct siw_rx_stream

Message ID 20231203092655.28102-3-guoqing.jiang@linux.dev (mailing list archive)
State Accepted
Delegated to: Jason Gunthorpe
Headers show
Series Misc changes for siw | expand

Commit Message

Guoqing Jiang Dec. 3, 2023, 9:26 a.m. UTC 
We can reduce the memory of the struct by move some of it's
member.

Before,

	/* size: 144, cachelines: 3, members: 17 */
	/* sum members: 124, holes: 3, sum holes: 12 */
	/* sum bitfield members: 7 bits (0 bytes) */
	/* padding: 7 */
	/* bit_padding: 1 bits */

After

	/* size: 128, cachelines: 2, members: 17 */
	/* padding: 3 */
	/* bit_padding: 1 bits */

Acked-by: Bernard Metzler <bmt@zurich.ibm.com>
Signed-off-by: Guoqing Jiang <guoqing.jiang@linux.dev>
---
 drivers/infiniband/sw/siw/siw.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/drivers/infiniband/sw/siw/siw.h b/drivers/infiniband/sw/siw/siw.h
index d14bb965af75..2edba2a864bb 100644
--- a/drivers/infiniband/sw/siw/siw.h
+++ b/drivers/infiniband/sw/siw/siw.h
@@ -288,10 +288,11 @@  struct siw_rx_stream {
 	int skb_offset; /* offset in skb */
 	int skb_copied; /* processed bytes in skb */
 
+	enum siw_rx_state state;
+
 	union iwarp_hdr hdr;
 	struct mpa_trailer trailer;
-
-	enum siw_rx_state state;
+	struct shash_desc *mpa_crc_hd;
 
 	/*
 	 * For each FPDU, main RX loop runs through 3 stages:
@@ -313,7 +314,6 @@  struct siw_rx_stream {
 	u64 ddp_to;
 	u32 inval_stag; /* Stag to be invalidated */
 
-	struct shash_desc *mpa_crc_hd;
 	u8 rx_suspend : 1;
 	u8 pad : 2; /* # of pad bytes expected */
 	u8 rdmap_op : 4; /* opcode of current frame */