ovs_nla_get_match(9)

💖 ovs_nla_get_match(9) 💖

okay bestie, this one's straight from the Kernel API Manual, and it's giving “parse Netlink attributes into a flow key and mask” realness. no cap 🫶

🌸 NAME 🌸

ovs_nla_get_match — parses Netlink attributes into a flow key and mask.

If the mask is NULL, the flow is treated as an exact match flow. Otherwise, it's treated as a wildcarded flow — except the mask does not include any don't care bit. periodt 💅

✨ SYNOPSIS ✨

int ovs_nla_get_match (struct net *net , struct sw_flow_match *match ,
const struct nlattr *nla_key , const struct nlattr *nla_mask , bool log
);

🎀 ARGUMENTS 🎀

• net — used to determine per-namespace field support. literally namespace field-support vibes 🌈
• match — receives the extracted flow match information. it's the main character that gets the info 👑
• nla_key — a Netlink attribute holding a nested OVS_KEY_ATTR_* Netlink attribute sequence. the fields should be those of the packet that triggered the creation of this flow 🔥
• nla_mask — optional. a Netlink attribute holding a nested OVS_KEY_ATTR_* Netlink attribute that specifies the mask field of the wildcarded flow 🎀
• log — boolean to allow kernel error logging. normally true, but when probing for feature compatibility this should be passed in as false to suppress unnecessary error logging 💖

🦋 SEE ALSO 🦋

• Kernel file ./net/openvswitch/flow_netlink.c
• ovs_nla_get_flow_metadata(9)

mwah 💋 that's the whole page, bestie — sourced from ./net/openvswitch, dated October 2026, and starring ovs_nla_get_match(9) 🧚‍♀️✨