#include #include #include #include #include #include #include #include #include #include #include #include #include #include "ila.h" static __wsum get_csum_diff(struct ipv6hdr *ip6h, struct ila_params *p) { struct ila_addr *iaddr = ila_a2i(&ip6h->daddr); if (p->locator_match.v64) return p->csum_diff; else return compute_csum_diff8((__be32 *)&iaddr->loc, (__be32 *)&p->locator); } static void ila_csum_do_neutral(struct ila_addr *iaddr, struct ila_params *p) { __sum16 *adjust = (__force __sum16 *)&iaddr->ident.v16[3]; __wsum diff, fval; /* Check if checksum adjust value has been cached */ if (p->locator_match.v64) { diff = p->csum_diff; } else { diff = compute_csum_diff8((__be32 *)&p->locator, (__be32 *)iaddr); } fval = (__force __wsum)(ila_csum_neutral_set(iaddr->ident) ? CSUM_NEUTRAL_FLAG : ~CSUM_NEUTRAL_FLAG); diff = csum_add(diff, fval); *adjust = ~csum_fold(csum_add(diff, csum_unfold(*adjust))); /* Flip the csum-neutral bit. Either we are doing a SIR->ILA * translation with ILA_CSUM_NEUTRAL_MAP as the csum_method * and the C-bit is not set, or we are doing an ILA-SIR * tranlsation and the C-bit is set. */ iaddr->ident.csum_neutral ^= 1; } static void ila_csum_adjust_transport(struct sk_buff *skb, struct ila_params *p) { __wsum diff; struct ipv6hdr *ip6h = ipv6_hdr(skb); struct ila_addr *iaddr = ila_a2i(&ip6h->daddr); size_t nhoff = sizeof(struct ipv6hdr); switch (ip6h->nexthdr) { case NEXTHDR_TCP: if (likely(pskb_may_pull(skb, nhoff + sizeof(struct tcphdr)))) { struct tcphdr *th = (struct tcphdr *) (skb_network_header(skb) + nhoff); diff = get_csum_diff(ip6h, p); inet_proto_csum_replace_by_diff(&th->check, skb, diff, true); } break; case NEXTHDR_UDP: if (likely(pskb_may_pull(skb, nhoff + sizeof(struct udphdr)))) { struct udphdr *uh = (struct udphdr *) (skb_network_header(skb) + nhoff); if (uh->check || skb->ip_summed == CHECKSUM_PARTIAL) { diff = get_csum_diff(ip6h, p); inet_proto_csum_replace_by_diff(&uh->check, skb, diff, true); if (!uh->check) uh->check = CSUM_MANGLED_0; } } break; case NEXTHDR_ICMP: if (likely(pskb_may_pull(skb, nhoff + sizeof(struct icmp6hdr)))) { struct icmp6hdr *ih = (struct icmp6hdr *) (skb_network_header(skb) + nhoff); diff = get_csum_diff(ip6h, p); inet_proto_csum_replace_by_diff(&ih->icmp6_cksum, skb, diff, true); } break; } /* Now change destination address */ iaddr->loc = p->locator; } void ila_update_ipv6_locator(struct sk_buff *skb, struct ila_params *p, bool set_csum_neutral) { struct ipv6hdr *ip6h = ipv6_hdr(skb); struct ila_addr *iaddr = ila_a2i(&ip6h->daddr); /* First deal with the transport checksum */ if (ila_csum_neutral_set(iaddr->ident)) { /* C-bit is set in the locator indicating that this * is a locator being translated to a SIR address. * Perform (receiver) checksum-neutral translation. */ if (!set_csum_neutral) ila_csum_do_neutral(iaddr, p); } else { switch (p->csum_mode) { case ILA_CSUM_ADJUST_TRANSPORT: ila_csum_adjust_transport(skb, p); break; case ILA_CSUM_NEUTRAL_MAP: ila_csum_do_neutral(iaddr, p); break; case ILA_CSUM_NO_ACTION: break; } } /* Now change destination address */ iaddr->loc = p->locator; } void ila_init_saved_csum(struct ila_params *p) { if (!p->locator_match.v64) return; p->csum_diff = compute_csum_diff8( (__be32 *)&p->locator, (__be32 *)&p->locator_match); } static int __init ila_init(void) { int ret; ret = ila_lwt_init(); if (ret) goto fail_lwt; ret = ila_xlat_init(); if (ret) goto fail_xlat; return 0; fail_xlat: ila_lwt_fini(); fail_lwt: return ret; } static void __exit ila_fini(void) { ila_xlat_fini(); ila_lwt_fini(); } module_init(ila_init); module_exit(ila_fini); MODULE_AUTHOR("Tom Herbert "); MODULE_LICENSE("GPL"); t' onchange='this.form.submit();'>
authorMark Rutland <mark.rutland@arm.com>2017-01-25 19:30:09 +0000
committerMark Brown <broonie@kernel.org>2017-01-25 21:05:37 +0000
commit1372cef1c697d8aac0cc923f8aa2c37d790ec9ed (patch)
treeed5f350cd559bc15ae370f0c9fd280204e98597d /net/mac80211/wpa.c
parentd00b74613fb18dfd0a5aa99270ee2e72d5c808d7 (diff)
regulator: fixed: Revert support for ACPI interface
This reverts commit 13bed58ce874 (regulator: fixed: add support for ACPI interface). While there does appear to be a practical need to manage regulators on ACPI systems, using ad-hoc properties to describe regulators to the kernel presents a number of problems (especially should ACPI gain first class support for such things), and there are ongoing discussions as to how to manage this. Until there is a rough consensus, revert commit 13bed58ce8748d43, which hasn't been in a released kernel yet as discussed in [1] and the surrounding thread. [1] http://lkml.kernel.org/r/20170125184949.x2wkoo7kbaaajkjk@sirena.org.uk Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Liam Girdwood <lgirdwood@gmail.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Lu Baolu <baolu.lu@linux.intel.com> Cc: Mark Brown <broonie@kernel.org> Cc: Rafael J. Wysocki <rafael@kernel.org> Cc: linux-kernel@vger.kernel.org Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'net/mac80211/wpa.c')