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Mon, 08 Jun 2026 06:11:47 -0700 (PDT) Received: from localhost ([104.28.193.185]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-490c2d37edbsm300135675e9.2.2026.06.08.06.11.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 08 Jun 2026 06:11:46 -0700 (PDT) From: Mariusz Klimek To: netdev@vger.kernel.org Cc: andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, dsahern@kernel.org, idosch@nvidia.com, ncardwell@google.com, shuah@kernel.org, kuniyu@google.com, alice@isovalent.com, Mariusz Klimek Subject: [PATCH net-next 10/10] selftests/net: add jumbogram test case to msg_zerocopy.sh Date: Mon, 8 Jun 2026 15:07:55 +0200 Message-ID: <20260608130755.5626-11-maklimek97@gmail.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260608130755.5626-1-maklimek97@gmail.com> References: <20260608130755.5626-1-maklimek97@gmail.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This patch adds a test case to msg_zerocopy.sh that tests whether zerocopy works with TCP jumbograms. Signed-off-by: Mariusz Klimek --- tools/testing/selftests/net/msg_zerocopy.c | 3 ++- tools/testing/selftests/net/msg_zerocopy.sh | 3 ++- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/net/msg_zerocopy.c b/tools/testing/selftests/net/msg_zerocopy.c index 1d5d3c4e7e87..b5df360c7811 100644 --- a/tools/testing/selftests/net/msg_zerocopy.c +++ b/tools/testing/selftests/net/msg_zerocopy.c @@ -789,7 +789,8 @@ static void parse_opts(int argc, char **argv) setup_sockaddr(cfg_family, daddr, &cfg_dst_addr); setup_sockaddr(cfg_family, saddr, &cfg_src_addr); - if (cfg_payload_len > max_payload_len) + if (cfg_payload_len > max_payload_len && + (strcmp(cfg_test, "tcp") != 0 || cfg_family != PF_INET6)) error(1, 0, "-s: payload exceeds max (%d)", max_payload_len); if (cfg_cork_mixed && (!cfg_zerocopy || !cfg_cork)) error(1, 0, "-m: cork_mixed requires corking and zerocopy"); diff --git a/tools/testing/selftests/net/msg_zerocopy.sh b/tools/testing/selftests/net/msg_zerocopy.sh index 28178a38a4e7..ab498c6ea210 100755 --- a/tools/testing/selftests/net/msg_zerocopy.sh +++ b/tools/testing/selftests/net/msg_zerocopy.sh @@ -7,7 +7,7 @@ set -e readonly DEV="veth0" readonly DUMMY_DEV="dummy0" -readonly DEV_MTU=65535 +readonly DEV_MTU=200000 readonly BIN="./msg_zerocopy" readonly RAND="$(mktemp -u XXXXXX)" @@ -29,6 +29,7 @@ if [[ "$#" -eq "0" ]]; then $0 4 tcp -t 1 || ret=1 $0 6 tcp -t 1 || ret=1 + $0 6 tcp -t 1 -s 100000 || ret=1 $0 4 udp -t 1 || ret=1 $0 6 udp -t 1 || ret=1 -- 2.47.3