Date: Thu, 7 Jan 2016 16:24:18 +0000 (UTC) From: Sean Bruno <sbruno@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r293330 - head/sys/dev/e1000 Message-ID: <201601071624.u07GOIfr056908@repo.freebsd.org>
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Author: sbruno Date: Thu Jan 7 16:24:18 2016 New Revision: 293330 URL: https://svnweb.freebsd.org/changeset/base/293330 Log: Wow, um ... sorry about that. The commit log for this code should have read that it was for EM_MULTIQUEUE. Revert this and try again. Modified: head/sys/dev/e1000/if_em.c Modified: head/sys/dev/e1000/if_em.c ============================================================================== --- head/sys/dev/e1000/if_em.c Thu Jan 7 16:20:55 2016 (r293329) +++ head/sys/dev/e1000/if_em.c Thu Jan 7 16:24:18 2016 (r293330) @@ -3733,38 +3733,29 @@ em_transmit_checksum_setup(struct tx_rin offload |= CSUM_TCP; tucss = hdr_len; tucso = hdr_len + offsetof(struct tcphdr, th_sum); - /* - * The 82574L can only remember the *last* context used - * regardless of queue that it was use for. We cannot reuse - * contexts on this hardware platform and must generate a new - * context every time. 82574L hardware spec, section 7.2.6, - * second note. - */ - if (adapter->num_queues < 2) { - /* - * Setting up new checksum offload context for every - * frames takes a lot of processing time for hardware. - * This also reduces performance a lot for small sized - * frames so avoid it if driver can use previously - * configured checksum offload context. - */ - if (txr->last_hw_offload == offload) { - if (offload & CSUM_IP) { - if (txr->last_hw_ipcss == ipcss && - txr->last_hw_ipcso == ipcso && - txr->last_hw_tucss == tucss && - txr->last_hw_tucso == tucso) - return; - } else { - if (txr->last_hw_tucss == tucss && - txr->last_hw_tucso == tucso) - return; - } - } - txr->last_hw_offload = offload; - txr->last_hw_tucss = tucss; - txr->last_hw_tucso = tucso; - } + /* + * Setting up new checksum offload context for every frames + * takes a lot of processing time for hardware. This also + * reduces performance a lot for small sized frames so avoid + * it if driver can use previously configured checksum + * offload context. + */ + if (txr->last_hw_offload == offload) { + if (offload & CSUM_IP) { + if (txr->last_hw_ipcss == ipcss && + txr->last_hw_ipcso == ipcso && + txr->last_hw_tucss == tucss && + txr->last_hw_tucso == tucso) + return; + } else { + if (txr->last_hw_tucss == tucss && + txr->last_hw_tucso == tucso) + return; + } + } + txr->last_hw_offload = offload; + txr->last_hw_tucss = tucss; + txr->last_hw_tucso = tucso; /* * Start offset for payload checksum calculation. * End offset for payload checksum calculation. @@ -3780,38 +3771,29 @@ em_transmit_checksum_setup(struct tx_rin *txd_upper |= E1000_TXD_POPTS_TXSM << 8; tucss = hdr_len; tucso = hdr_len + offsetof(struct udphdr, uh_sum); - /* - * The 82574L can only remember the *last* context used - * regardless of queue that it was use for. We cannot reuse - * contexts on this hardware platform and must generate a new - * context every time. 82574L hardware spec, section 7.2.6, - * second note. - */ - if (adapter->num_queues < 2) { - /* - * Setting up new checksum offload context for every - * frames takes a lot of processing time for hardware. - * This also reduces performance a lot for small sized - * frames so avoid it if driver can use previously - * configured checksum offload context. - */ - if (txr->last_hw_offload == offload) { - if (offload & CSUM_IP) { - if (txr->last_hw_ipcss == ipcss && - txr->last_hw_ipcso == ipcso && - txr->last_hw_tucss == tucss && - txr->last_hw_tucso == tucso) - return; - } else { - if (txr->last_hw_tucss == tucss && - txr->last_hw_tucso == tucso) - return; - } + /* + * Setting up new checksum offload context for every frames + * takes a lot of processing time for hardware. This also + * reduces performance a lot for small sized frames so avoid + * it if driver can use previously configured checksum + * offload context. + */ + if (txr->last_hw_offload == offload) { + if (offload & CSUM_IP) { + if (txr->last_hw_ipcss == ipcss && + txr->last_hw_ipcso == ipcso && + txr->last_hw_tucss == tucss && + txr->last_hw_tucso == tucso) + return; + } else { + if (txr->last_hw_tucss == tucss && + txr->last_hw_tucso == tucso) + return; } - txr->last_hw_offload = offload; - txr->last_hw_tucss = tucss; - txr->last_hw_tucso = tucso; - } + } + txr->last_hw_offload = offload; + txr->last_hw_tucss = tucss; + txr->last_hw_tucso = tucso; /* * Start offset for header checksum calculation. * End offset for header checksum calculation.
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