[PATCH net-next 2/8] bnxt_en: Simplify __bnxt_poll_cqs_done().
From: Michael Chan <michael.chan@broadcom.com>
Date: 2020-03-08 22:46:15
Subsystem:
broadcom bnxt_en 50 gigabit ethernet driver, networking drivers, the rest · Maintainers:
Michael Chan, Pavan Chebbi, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Simplify the function by removing tha 'all' parameter. In the current code, the caller has to specify whether to update/arm both completion rings with the 'all' parameter. Instead of this, we can just update/arm all the completion rings that have been polled. By setting cpr->had_work_done earlier in __bnxt_poll_work(), we know which completion ring has been polled and can just update/arm all the completion rings with cpr->had_work_done set. This simplifies the function with one less parameter and works just as well. Signed-off-by: Michael Chan <michael.chan@broadcom.com> --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 0b1af02..6b4f8d8 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c@@ -2162,6 +2162,7 @@ static int __bnxt_poll_work(struct bnxt *bp, struct bnxt_cp_ring_info *cpr, struct tx_cmp *txcmp; cpr->has_more_work = 0; + cpr->had_work_done = 1; while (1) { int rc;
@@ -2175,7 +2176,6 @@ static int __bnxt_poll_work(struct bnxt *bp, struct bnxt_cp_ring_info *cpr, * reading any further. */ dma_rmb(); - cpr->had_work_done = 1; if (TX_CMP_TYPE(txcmp) == CMP_TYPE_TX_L2_CMP) { tx_pkts++; /* return full budget so NAPI will complete. */
@@ -2392,7 +2392,7 @@ static int __bnxt_poll_cqs(struct bnxt *bp, struct bnxt_napi *bnapi, int budget) } static void __bnxt_poll_cqs_done(struct bnxt *bp, struct bnxt_napi *bnapi, - u64 dbr_type, bool all) + u64 dbr_type) { struct bnxt_cp_ring_info *cpr = &bnapi->cp_ring; int i;
@@ -2401,7 +2401,7 @@ static void __bnxt_poll_cqs_done(struct bnxt *bp, struct bnxt_napi *bnapi, struct bnxt_cp_ring_info *cpr2 = cpr->cp_ring_arr[i]; struct bnxt_db_info *db; - if (cpr2 && (all || cpr2->had_work_done)) { + if (cpr2 && cpr2->had_work_done) { db = &cpr2->cp_db; writeq(db->db_key64 | dbr_type | RING_CMP(cpr2->cp_raw_cons), db->doorbell);
@@ -2425,10 +2425,10 @@ static int bnxt_poll_p5(struct napi_struct *napi, int budget) cpr->has_more_work = 0; work_done = __bnxt_poll_cqs(bp, bnapi, budget); if (cpr->has_more_work) { - __bnxt_poll_cqs_done(bp, bnapi, DBR_TYPE_CQ, false); + __bnxt_poll_cqs_done(bp, bnapi, DBR_TYPE_CQ); return work_done; } - __bnxt_poll_cqs_done(bp, bnapi, DBR_TYPE_CQ_ARMALL, true); + __bnxt_poll_cqs_done(bp, bnapi, DBR_TYPE_CQ_ARMALL); if (napi_complete_done(napi, work_done)) BNXT_DB_NQ_ARM_P5(&cpr->cp_db, cpr->cp_raw_cons); return work_done;
@@ -2441,8 +2441,7 @@ static int bnxt_poll_p5(struct napi_struct *napi, int budget) if (cpr->has_more_work) break; - __bnxt_poll_cqs_done(bp, bnapi, DBR_TYPE_CQ_ARMALL, - false); + __bnxt_poll_cqs_done(bp, bnapi, DBR_TYPE_CQ_ARMALL); cpr->cp_raw_cons = raw_cons; if (napi_complete_done(napi, work_done)) BNXT_DB_NQ_ARM_P5(&cpr->cp_db,
@@ -2468,7 +2467,7 @@ static int bnxt_poll_p5(struct napi_struct *napi, int budget) } raw_cons = NEXT_RAW_CMP(raw_cons); } - __bnxt_poll_cqs_done(bp, bnapi, DBR_TYPE_CQ, true); + __bnxt_poll_cqs_done(bp, bnapi, DBR_TYPE_CQ); cpr->cp_raw_cons = raw_cons; return work_done; }
--
2.5.1