diff --git a/FreeBSD/sys/netinet/cc/cc_newreno.c b/FreeBSD/sys/netinet/cc/cc_newreno.c index a3b29e529cfa..1cdd217f6473 100644 --- a/FreeBSD/sys/netinet/cc/cc_newreno.c +++ b/FreeBSD/sys/netinet/cc/cc_newreno.c @@ -81,7 +81,7 @@ static MALLOC_DEFINE(M_NEWRENO, "newreno data", #define CAST_PTR_INT(X) (*((int*)(X))) -static int newreno_cb_init(struct cc_var *ccv); +static void newreno_cb_destroy(struct cc_var *ccv); static void newreno_ack_received(struct cc_var *ccv, uint16_t type); static void newreno_after_idle(struct cc_var *ccv); static void newreno_cong_signal(struct cc_var *ccv, uint32_t type); @@ -95,7 +95,7 @@ static VNET_DEFINE(uint32_t, newreno_beta_ecn) = 80; struct cc_algo newreno_cc_algo = { .name = "newreno", - .cb_init = newreno_cb_init, + .cb_destroy = newreno_cb_destroy, .ack_received = newreno_ack_received, .after_idle = newreno_after_idle, .cong_signal = newreno_cong_signal, @@ -108,18 +108,31 @@ struct newreno { uint32_t beta_ecn; }; -int -newreno_cb_init(struct cc_var *ccv) +static inline struct newreno * +newreno_condmalloc(struct cc_var *ccv, int jit_alloc) { - struct newreno *nreno; + struct newreno *nreno; - nreno = malloc(sizeof(struct newreno), M_NEWRENO, M_NOWAIT|M_ZERO); - if (nreno != NULL) { - nreno->beta = V_newreno_beta; - nreno->beta_ecn = V_newreno_beta_ecn; + nreno = ccv->cc_data; + if (nreno == NULL && jit_alloc) { + nreno = malloc(sizeof(struct newreno), M_NEWRENO, + M_NOWAIT|M_ZERO); + if (nreno != NULL) { + nreno->beta = V_newreno_beta; + nreno->beta_ecn = V_newreno_beta_ecn; + ccv->cc_data = nreno; + } } - return (0); + return (nreno); +} + +static void +newreno_cb_destroy(struct cc_var *ccv) +{ + + if (ccv->cc_data != NULL) + free(ccv->cc_data, M_NEWRENO); } static void @@ -224,20 +237,18 @@ static void newreno_cong_signal(struct cc_var *ccv, uint32_t type) { struct newreno *nreno; - uint32_t cwin, factor; + uint32_t beta, beta_ecn, cwin, factor; u_int mss; - factor = V_newreno_beta; - nreno = ccv->cc_data; - if (nreno != NULL) { - if (V_cc_do_abe) - factor = (type == CC_ECN ? nreno->beta_ecn: nreno->beta); - else - factor = nreno->beta; - } - cwin = CCV(ccv, snd_cwnd); mss = CCV(ccv, t_maxseg); + nreno = ccv->cc_data; + beta = (nreno == NULL) ? V_newreno_beta : nreno->beta; + beta_ecn = (nreno == NULL) ? V_newreno_beta_ecn : nreno->beta_ecn; + if (V_cc_do_abe && type == CC_ECN) + factor = beta_ecn; + else + factor = beta; /* Catch algos which mistakenly leak private signal types. */ KASSERT((type & CC_SIGPRIVMASK) == 0, @@ -253,8 +264,8 @@ newreno_cong_signal(struct cc_var *ccv, uint32_t type) V_cc_do_abe && V_cc_abe_frlossreduce)) { CCV(ccv, snd_ssthresh) = ((uint64_t)CCV(ccv, snd_ssthresh) * - (uint64_t)nreno->beta) / - (100ULL * (uint64_t)nreno->beta_ecn); + (uint64_t)beta) / + (100ULL * (uint64_t)beta_ecn); } if (!IN_CONGRECOVERY(CCV(ccv, t_flags))) CCV(ccv, snd_ssthresh) = cwin; @@ -278,7 +289,6 @@ static void newreno_post_recovery(struct cc_var *ccv) { int pipe; - pipe = 0; if (IN_FASTRECOVERY(CCV(ccv, t_flags))) { /* @@ -302,7 +312,7 @@ newreno_post_recovery(struct cc_var *ccv) } } -int +static int newreno_ctl_output(struct cc_var *ccv, struct sockopt *sopt, void *buf) { struct newreno *nreno; @@ -311,11 +321,14 @@ newreno_ctl_output(struct cc_var *ccv, struct sockopt *sopt, void *buf) if (sopt->sopt_valsize != sizeof(struct cc_newreno_opts)) return (EMSGSIZE); - nreno = ccv->cc_data; + nreno = newreno_condmalloc(ccv, sopt->sopt_dir == SOPT_SET); opt = buf; - + switch (sopt->sopt_dir) { case SOPT_SET: + /* We cannot set without cc_data memory. */ + if (nreno == NULL) + return (ENOMEM); switch (opt->name) { case CC_NEWRENO_BETA: nreno->beta = opt->val; @@ -328,17 +341,21 @@ newreno_ctl_output(struct cc_var *ccv, struct sockopt *sopt, void *buf) default: return (ENOPROTOOPT); } + break; case SOPT_GET: switch (opt->name) { case CC_NEWRENO_BETA: - opt->val = nreno->beta; + opt->val = (nreno == NULL) ? + V_newreno_beta : nreno->beta; break; case CC_NEWRENO_BETA_ECN: - opt->val = nreno->beta_ecn; + opt->val = (nreno == NULL) ? + V_newreno_beta_ecn : nreno->beta_ecn; break; default: return (ENOPROTOOPT); } + break; default: return (EINVAL); } @@ -349,6 +366,7 @@ newreno_ctl_output(struct cc_var *ccv, struct sockopt *sopt, void *buf) static int newreno_beta_handler(SYSCTL_HANDLER_ARGS) { + if (req->newptr != NULL ) { if (arg1 == &VNET_NAME(newreno_beta_ecn) && !V_cc_do_abe) return (EACCES);