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[204.195.96.226]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-435e10e48a6sm45799474f8f.8.2026.02.02.15.13.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 02 Feb 2026 15:13:23 -0800 (PST) From: Stephen Hemminger To: dev@dpdk.org Cc: Stephen Hemminger Subject: [PATCH v12 17/19] net/pcap: clarify maximum received packet Date: Mon, 2 Feb 2026 15:09:20 -0800 Message-ID: <20260202231245.216433-18-stephen@networkplumber.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260202231245.216433-1-stephen@networkplumber.org> References: <20260106182823.192350-1-stephen@networkplumber.org> <20260202231245.216433-1-stephen@networkplumber.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 driver has constant RTE_ETH_PCAP_SNAPSHOT_LEN with is set to the largest value the pcap library will return, so that should also be the largest receive buffer. Signed-off-by: Stephen Hemminger --- drivers/net/pcap/pcap_ethdev.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/pcap/pcap_ethdev.c b/drivers/net/pcap/pcap_ethdev.c index f3220cea92..35d4f28d50 100644 --- a/drivers/net/pcap/pcap_ethdev.c +++ b/drivers/net/pcap/pcap_ethdev.c @@ -845,10 +845,11 @@ eth_dev_info(struct rte_eth_dev *dev, dev_info->if_index = internals->if_index; dev_info->max_mac_addrs = 1; - dev_info->max_rx_pktlen = (uint32_t) -1; + dev_info->max_rx_pktlen = RTE_ETH_PCAP_SNAPSHOT_LEN; dev_info->max_rx_queues = dev->data->nb_rx_queues; dev_info->max_tx_queues = dev->data->nb_tx_queues; dev_info->min_rx_bufsize = 0; + dev_info->max_mtu = RTE_ETH_PCAP_SNAPSHOT_LEN - RTE_ETHER_HDR_LEN; dev_info->tx_offload_capa = RTE_ETH_TX_OFFLOAD_MULTI_SEGS | RTE_ETH_TX_OFFLOAD_VLAN_INSERT; dev_info->rx_offload_capa = RTE_ETH_RX_OFFLOAD_VLAN_STRIP | -- 2.51.0