Change Details

The core piece of deferred in_pcbfree has already been discussed in D15510. This branch has been tested by pho@ and LLNW. Rx on master prior to entropy fix: https://people.freebsd.org/~mmacy/2018.05.11/udprx_master.svg rx w/ entropy fix and inpcb lock change https://people.freebsd.org/~mmacy/2018.05.11/udprx_norandom.svg UDP TX before https://people.freebsd.org/~mmacy/2018.05.11/udpsender5.svg UDP TX after https://people.freebsd.org/~mmacy/2018.05.11/udpsender6.svg

The core piece of deferred in_pcbfree has already been discussed in D15510. This change now consists of 3 pieces: - Convert inpcbinfo info & hash locks to epoch for read and mutex for write - Check if an inpcb looked up in the hash has been logically deleted - Garbage collect code that handled INP_INFO_TRY_RLOCK failures as INP_INFO_RLOCK can no longer fail This branch has been tested by pho@ and LLNW. Rx on master prior to entropy fix: https://people.freebsd.org/~mmacy/2018.05.11/udprx_master.svg rx w/ entropy fix and inpcb lock change https://people.freebsd.org/~mmacy/2018.05.11/udprx_norandom.svg UDP TX before https://people.freebsd.org/~mmacy/2018.05.11/udpsender5.svg UDP TX after https://people.freebsd.org/~mmacy/2018.05.11/udpsender6.svg

The core piece of deferred in_pcbfree has already been discussed in D15510. This change now consists of 3 pieces: - Convert inpcbinfo info & hash locks to epoch for read and mutex for write - Check if an inpcb looked up in the hash has been logically deleted - Garbage collect code that handled INP_INFO_TRY_RLOCK failures as INP_INFO_RLOCK can no longer fail This branch has been tested by pho@ and LLNW. Rx on master prior to entropy fix: https://people.freebsd.org/~mmacy/2018.05.11/udprx_master.svg rx w/ entropy fix and inpcb lock change https://people.freebsd.org/~mmacy/2018.05.11/udprx_norandom.svg UDP TX before https://people.freebsd.org/~mmacy/2018.05.11/udpsender5.svg UDP TX after https://people.freebsd.org/~mmacy/2018.05.11/udpsender6.svg