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Support is for pcap ifaces only and not for pcap files. Support is for Linux only. patch series: [PATCH v8 1/3] pcap: support MTU set for linux interfaces [PATCH v8 2/3] pcap: support MTU set for linux interfaces TX [PATCH v8 3/3] pcap: support MTU set for linux interfaces count doc/guides/rel_notes/release_22_07.rst | 3 + drivers/net/pcap/pcap_ethdev.c | 126 +++++++++++++++++++++++++-------- drivers/net/pcap/pcap_osdep.h | 1 + drivers/net/pcap/pcap_osdep_freebsd.c | 7 ++ drivers/net/pcap/pcap_osdep_linux.c | 21 ++++++ drivers/net/pcap/pcap_osdep_windows.c | 7 ++ 6 files changed, 134 insertions(+), 31 deletions(-) --- v8: cosmetics only 1. checkpatch typo fix 2. rel_notes apply patch fix by rebasing on latest main v7: 1. TX drop only individual oversized packets and not the entire burst 2. Count oversize drops by i/oerrors v6: Fixes for v5 approach 1. freebsd compilation fix 2. checkpatch warning fix v5: Alternative approach Instead of checking MTU in the pmd set it on the OS interface and let it do the enforcment. v4: 1. Add release notes comment 2. Access pmd internals via queue struct 3. eth_mtu_set code convention fixes v3: Preserve pcap behavior to support max size packets by default alternative to v2 in order to limit the code change to pcap only and avoid abi change. Enforce mtu only in case rte_eth_dev_set_mtu was explicitly called. v2: Preserve pcap behavior to support max size packets by default.