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[204.195.123.141]) by smtp.gmail.com with ESMTPSA id m8-20020a1709026bc800b001d60a70809bsm379238plt.168.2024.01.16.10.43.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 Jan 2024 10:43:12 -0800 (PST) From: Stephen Hemminger To: dev@dpdk.org Cc: Stephen Hemminger , ivan.malov@oktetlabs.ru, Tyler Retzlaff , Andrew Rybchenko , Ivan Malov Subject: [PATCH v3 2/5] net/sfc: fix non-constant expression in RTE_BUILD_BUG_ON() Date: Tue, 16 Jan 2024 10:41:12 -0800 Message-ID: <20240116184307.162882-3-stephen@networkplumber.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240116184307.162882-1-stephen@networkplumber.org> References: <20231111172153.57461-1-stephen@networkplumber.org> <20240116184307.162882-1-stephen@networkplumber.org> MIME-Version: 1.0 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org The macro RTE_MIN has some hidden assignments to provide type safety which means the statement can not be fully evaluated in first pass of compiler. Replace RTE_MIN() with equivalent macro. This will cause errors from checkpatch about multiple evaluations of same expression in macro but it is ok in this case. Fixes: 4f936666d790 ("net/sfc: support TSO for EF100 native datapath") Cc: ivan.malov@oktetlabs.ru Signed-off-by: Stephen Hemminger Acked-by: Tyler Retzlaff --- drivers/net/sfc/sfc_ef100_tx.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/net/sfc/sfc_ef100_tx.c b/drivers/net/sfc/sfc_ef100_tx.c index 1b6374775f07..f4bcadc1e8e0 100644 --- a/drivers/net/sfc/sfc_ef100_tx.c +++ b/drivers/net/sfc/sfc_ef100_tx.c @@ -26,6 +26,10 @@ #include "sfc_ef100.h" #include "sfc_nic_dma_dp.h" +#ifndef MIN +/* not typesafe but is a constant */ +#define MIN(x, y) ((x) < (y) ? (x) : (y)) +#endif #define sfc_ef100_tx_err(_txq, ...) \ SFC_DP_LOG(SFC_KVARG_DATAPATH_EF100, ERR, &(_txq)->dp.dpq, __VA_ARGS__) @@ -563,8 +567,7 @@ sfc_ef100_tx_pkt_descs_max(const struct rte_mbuf *m) * (split into many Tx descriptors). */ RTE_BUILD_BUG_ON(SFC_EF100_TX_SEND_DESC_LEN_MAX < - RTE_MIN((unsigned int)EFX_MAC_PDU_MAX, - SFC_MBUF_SEG_LEN_MAX)); + MIN((unsigned int)EFX_MAC_PDU_MAX, SFC_MBUF_SEG_LEN_MAX)); } if (m->ol_flags & sfc_dp_mport_override) {