From 877745b47783869a3149cf691ebff56e2a557f53 Mon Sep 17 00:00:00 2001 From: Max Gurtovoy Date: Mon, 11 Jan 2021 14:57:54 +0000 Subject: [PATCH] IB/iser: Simplify prot_caps setting Reduce the number of instructions made for setting protection caps. No need to do bitwise OR with 0 since we can zero the return value in the beginning of the function. Link: https://lore.kernel.org/r/20210111145754.56727-5-mgurtovoy@nvidia.com Reviewed-by: Israel Rukshin Signed-off-by: Max Gurtovoy Reviewed-by: Sagi Grimberg Signed-off-by: Jason Gunthorpe --- drivers/infiniband/ulp/iser/iscsi_iser.c | 21 ++++++++++++++------- 1 file changed, 14 insertions(+), 7 deletions(-) diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.c b/drivers/infiniband/ulp/iser/iscsi_iser.c index fcfdeb5..8fcaa11 100644 --- a/drivers/infiniband/ulp/iser/iscsi_iser.c +++ b/drivers/infiniband/ulp/iser/iscsi_iser.c @@ -590,13 +590,20 @@ iscsi_iser_session_destroy(struct iscsi_cls_session *cls_session) static inline unsigned int iser_dif_prot_caps(int prot_caps) { - return ((prot_caps & IB_PROT_T10DIF_TYPE_1) ? - SHOST_DIF_TYPE1_PROTECTION | SHOST_DIX_TYPE0_PROTECTION | - SHOST_DIX_TYPE1_PROTECTION : 0) | - ((prot_caps & IB_PROT_T10DIF_TYPE_2) ? - SHOST_DIF_TYPE2_PROTECTION | SHOST_DIX_TYPE2_PROTECTION : 0) | - ((prot_caps & IB_PROT_T10DIF_TYPE_3) ? - SHOST_DIF_TYPE3_PROTECTION | SHOST_DIX_TYPE3_PROTECTION : 0); + int ret = 0; + + if (prot_caps & IB_PROT_T10DIF_TYPE_1) + ret |= SHOST_DIF_TYPE1_PROTECTION | + SHOST_DIX_TYPE0_PROTECTION | + SHOST_DIX_TYPE1_PROTECTION; + if (prot_caps & IB_PROT_T10DIF_TYPE_2) + ret |= SHOST_DIF_TYPE2_PROTECTION | + SHOST_DIX_TYPE2_PROTECTION; + if (prot_caps & IB_PROT_T10DIF_TYPE_3) + ret |= SHOST_DIF_TYPE3_PROTECTION | + SHOST_DIX_TYPE3_PROTECTION; + + return ret; } /** -- 2.7.4