From: Long Li Date: Sun, 14 May 2023 06:18:15 +0000 (-0700) Subject: [PATCH 24/44] RDMA/mana_ib: Use v2 version of cfg_rx_steer_req to enable RX coalescing X-Git-Tag: archive/raspbian/6.1.135-1+rpi1^2~21 X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=9d4a197cd8a23ff19bee7edfc8d8f17faf66fa5a;p=linux.git [PATCH 24/44] RDMA/mana_ib: Use v2 version of cfg_rx_steer_req to enable RX coalescing With RX coalescing, one CQE entry can be used to indicate multiple packets on the receive queue. This saves processing time and PCI bandwidth over the CQ. The MANA Ethernet driver also uses the v2 version of the protocol. It doesn't use RX coalescing and its behavior is not changed. Link: https://lore.kernel.org/r/1684045095-31228-1-git-send-email-longli@linuxonhyperv.com Signed-off-by: Long Li Signed-off-by: Jason Gunthorpe (cherry picked from commit 2145328515c8fa9b8a9f7889250bc6c032f2a0e6) Signed-off-by: Bastian Blank Gbp-Pq: Topic features/all/ethernet-microsoft Gbp-Pq: Name 0024-RDMA-mana_ib-Use-v2-version-of-cfg_rx_steer_req-to-e.patch --- diff --git a/drivers/net/ethernet/microsoft/mana/mana_en.c b/drivers/net/ethernet/microsoft/mana/mana_en.c index 5000bff4070..a1c8b3c9a1e 100644 --- a/drivers/net/ethernet/microsoft/mana/mana_en.c +++ b/drivers/net/ethernet/microsoft/mana/mana_en.c @@ -982,7 +982,7 @@ static int mana_cfg_vport_steering(struct mana_port_context *apc, bool update_tab) { u16 num_entries = MANA_INDIRECT_TABLE_SIZE; - struct mana_cfg_rx_steer_req *req = NULL; + struct mana_cfg_rx_steer_req_v2 *req; struct mana_cfg_rx_steer_resp resp = {}; struct net_device *ndev = apc->ndev; mana_handle_t *req_indir_tab; @@ -997,6 +997,8 @@ static int mana_cfg_vport_steering(struct mana_port_context *apc, mana_gd_init_req_hdr(&req->hdr, MANA_CONFIG_VPORT_RX, req_buf_size, sizeof(resp)); + req->hdr.req.msg_version = GDMA_MESSAGE_V2; + req->vport = apc->port_handle; req->num_indir_entries = num_entries; req->indir_tab_offset = sizeof(*req); @@ -1006,6 +1008,7 @@ static int mana_cfg_vport_steering(struct mana_port_context *apc, req->update_hashkey = update_key; req->update_indir_tab = update_tab; req->default_rxobj = apc->default_rxobj; + req->cqe_coalescing_enable = 0; if (update_key) memcpy(&req->hashkey, apc->hashkey, MANA_HASH_KEY_SIZE); diff --git a/include/net/mana/mana.h b/include/net/mana/mana.h index 9cd1b085281..5d55e0bdaa8 100644 --- a/include/net/mana/mana.h +++ b/include/net/mana/mana.h @@ -579,7 +579,7 @@ struct mana_fence_rq_resp { }; /* HW DATA */ /* Configure vPort Rx Steering */ -struct mana_cfg_rx_steer_req { +struct mana_cfg_rx_steer_req_v2 { struct gdma_req_hdr hdr; mana_handle_t vport; u16 num_indir_entries; @@ -592,6 +592,8 @@ struct mana_cfg_rx_steer_req { u8 reserved; mana_handle_t default_rxobj; u8 hashkey[MANA_HASH_KEY_SIZE]; + u8 cqe_coalescing_enable; + u8 reserved2[7]; }; /* HW DATA */ struct mana_cfg_rx_steer_resp {