ipv6: clean up cork setup/release
Clean up ip6_setup_cork() and ip6_cork_release() adding a local variable for v6_cork->opt. It's a preparation patch for further changes. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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@ -1354,7 +1354,7 @@ static int ip6_setup_cork(struct sock *sk, struct inet_cork_full *cork,
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{
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struct ipv6_pinfo *np = inet6_sk(sk);
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unsigned int mtu;
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struct ipv6_txoptions *opt = ipc6->opt;
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struct ipv6_txoptions *nopt, *opt = ipc6->opt;
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/*
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* setup for corking
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@ -1363,32 +1363,28 @@ static int ip6_setup_cork(struct sock *sk, struct inet_cork_full *cork,
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if (WARN_ON(v6_cork->opt))
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return -EINVAL;
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v6_cork->opt = kzalloc(sizeof(*opt), sk->sk_allocation);
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if (unlikely(!v6_cork->opt))
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nopt = v6_cork->opt = kzalloc(sizeof(*opt), sk->sk_allocation);
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if (unlikely(!nopt))
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return -ENOBUFS;
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v6_cork->opt->tot_len = sizeof(*opt);
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v6_cork->opt->opt_flen = opt->opt_flen;
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v6_cork->opt->opt_nflen = opt->opt_nflen;
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nopt->tot_len = sizeof(*opt);
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nopt->opt_flen = opt->opt_flen;
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nopt->opt_nflen = opt->opt_nflen;
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v6_cork->opt->dst0opt = ip6_opt_dup(opt->dst0opt,
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sk->sk_allocation);
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if (opt->dst0opt && !v6_cork->opt->dst0opt)
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nopt->dst0opt = ip6_opt_dup(opt->dst0opt, sk->sk_allocation);
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if (opt->dst0opt && !nopt->dst0opt)
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return -ENOBUFS;
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v6_cork->opt->dst1opt = ip6_opt_dup(opt->dst1opt,
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sk->sk_allocation);
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if (opt->dst1opt && !v6_cork->opt->dst1opt)
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nopt->dst1opt = ip6_opt_dup(opt->dst1opt, sk->sk_allocation);
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if (opt->dst1opt && !nopt->dst1opt)
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return -ENOBUFS;
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v6_cork->opt->hopopt = ip6_opt_dup(opt->hopopt,
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sk->sk_allocation);
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if (opt->hopopt && !v6_cork->opt->hopopt)
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nopt->hopopt = ip6_opt_dup(opt->hopopt, sk->sk_allocation);
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if (opt->hopopt && !nopt->hopopt)
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return -ENOBUFS;
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v6_cork->opt->srcrt = ip6_rthdr_dup(opt->srcrt,
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sk->sk_allocation);
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if (opt->srcrt && !v6_cork->opt->srcrt)
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nopt->srcrt = ip6_rthdr_dup(opt->srcrt, sk->sk_allocation);
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if (opt->srcrt && !nopt->srcrt)
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return -ENOBUFS;
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/* need source address above miyazawa*/
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@ -1820,11 +1816,13 @@ static void ip6_cork_release(struct inet_cork_full *cork,
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struct inet6_cork *v6_cork)
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{
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if (v6_cork->opt) {
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kfree(v6_cork->opt->dst0opt);
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kfree(v6_cork->opt->dst1opt);
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kfree(v6_cork->opt->hopopt);
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kfree(v6_cork->opt->srcrt);
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kfree(v6_cork->opt);
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struct ipv6_txoptions *opt = v6_cork->opt;
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kfree(opt->dst0opt);
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kfree(opt->dst1opt);
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kfree(opt->hopopt);
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kfree(opt->srcrt);
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kfree(opt);
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v6_cork->opt = NULL;
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}
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