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mxip: Created patch file for lwIP containing MxIP-specific changes.

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This commit is contained in:
Michael Mueller
2025-06-20 17:40:40 +02:00
parent 4a3b85f667
commit 90761ae232
1 changed files with 270 additions and 0 deletions
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270
mxip.patch Normal file
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@@ -0,0 +1,270 @@
diff --color -urBN contrib/mxip-e310a8d13995d4b3110cb727a298d781b4f03504/src/lib/lwip/src/core/pbuf.c /home/mml/genode/contrib/mxip-e310a8d13995d4b3110cb727a298d781b4f03504/src/lib/lwip/src/core/pbuf.c
--- contrib/mxip-e310a8d13995d4b3110cb727a298d781b4f03504/src/lib/lwip/src/core/pbuf.c 2025-06-02 15:39:50.669263103 +0200
+++ /home/mml/genode/contrib/mxip-e310a8d13995d4b3110cb727a298d781b4f03504/src/lib/lwip/src/core/pbuf.c 2024-11-28 13:21:26.486875565 +0100
@@ -750,9 +750,7 @@
* further protection. */
SYS_ARCH_PROTECT(old_level);
/* all pbufs in a chain are referenced at least once */
- //LWIP_ASSERT("pbuf_free: p->ref > 0", p->ref > 0);
- if (p->ref <= 0)
- return 0;
+ LWIP_ASSERT("pbuf_free: p->ref > 0", p->ref > 0);
/* decrease reference count (number of pointers to pbuf) */
ref = --(p->ref);
SYS_ARCH_UNPROTECT(old_level);
diff --color -urBN contrib/mxip-e310a8d13995d4b3110cb727a298d781b4f03504/src/lib/lwip/src/core/tcp.c /home/mml/genode/contrib/mxip-e310a8d13995d4b3110cb727a298d781b4f03504/src/lib/lwip/src/core/tcp.c
--- contrib/mxip-e310a8d13995d4b3110cb727a298d781b4f03504/src/lib/lwip/src/core/tcp.c 2025-05-27 15:39:53.158278754 +0200
+++ /home/mml/genode/contrib/mxip-e310a8d13995d4b3110cb727a298d781b4f03504/src/lib/lwip/src/core/tcp.c 2024-12-01 19:07:26.497318728 +0100
@@ -174,6 +174,8 @@
/** List of all TCP PCBs that are in a state in which
* they accept or send data. */
struct tcp_pcb *tcp_active_pcbs;
+/* List of all remote hosts */
+struct tcp_host *tcp_remote_hosts;
/** List of all TCP PCBs in TIME-WAIT state */
struct tcp_pcb *tcp_tw_pcbs;
@@ -209,6 +211,13 @@
void
tcp_free(struct tcp_pcb *pcb)
{
+ struct tcp_host *host = NULL;
+ for (host = tcp_remote_hosts; host != NULL; host = host->next) {
+ if (ip_addr_cmp(&pcb->remote_ip, &host->remote_ip)) {
+ host->pcbs[pcb->remote_port] = NULL;
+ host->connections--;
+ }
+ }
LWIP_ASSERT("tcp_free: LISTEN", pcb->state != LISTEN);
#if LWIP_TCP_PCB_NUM_EXT_ARGS
tcp_ext_arg_invoke_callbacks_destroyed(pcb->ext_args);
@@ -2013,6 +2022,7 @@
LWIP_ASSERT_CORE_LOCKED();
if (pcb != NULL) {
LWIP_ASSERT("invalid socket state for recv callback", pcb->state != LISTEN);
+ //printf("pcb->recv is at %p\n", (void *)&(pcb->recv));
pcb->recv = recv;
}
}
diff --color -urBN contrib/mxip-e310a8d13995d4b3110cb727a298d781b4f03504/src/lib/lwip/src/core/tcp_in.c /home/mml/genode/contrib/mxip-e310a8d13995d4b3110cb727a298d781b4f03504/src/lib/lwip/src/core/tcp_in.c
--- contrib/mxip-e310a8d13995d4b3110cb727a298d781b4f03504/src/lib/lwip/src/core/tcp_in.c 2025-05-27 15:39:53.158278754 +0200
+++ /home/mml/genode/contrib/mxip-e310a8d13995d4b3110cb727a298d781b4f03504/src/lib/lwip/src/core/tcp_in.c 2024-12-03 21:32:29.385841338 +0100
@@ -119,6 +119,7 @@
{
struct tcp_pcb *pcb, *prev;
struct tcp_pcb_listen *lpcb;
+ struct tcp_host *remote_host;
#if SO_REUSE
struct tcp_pcb *lpcb_prev = NULL;
struct tcp_pcb_listen *lpcb_any = NULL;
@@ -246,15 +247,44 @@
/* Demultiplex an incoming segment. First, we check if it is destined
for an active connection. */
prev = NULL;
-
- for (pcb = tcp_active_pcbs; pcb != NULL; pcb = pcb->next) {
+ pcb = NULL;
+//#define LWIP_PCB_ARRAY 1
+ LWIP_DEBUGF(TCP_DEBUG, ("TCP packet incoming %" U16_F " -> %" U16_F "\n", tcphdr->src, tcphdr->dest));
+
+ for (remote_host = tcp_remote_hosts; remote_host != NULL; remote_host = remote_host->next) {
+ LWIP_DEBUGF(TCP_DEBUG, ("Comparing host structure ip=%" U32_F " with incoming IP %" U32_F "\n", remote_host->remote_ip, *ip_current_src_addr()));
+ if (ip_addr_cmp(ip_current_src_addr(), &remote_host->remote_ip))
+ break;
+ }
+#ifdef LWIP_PCB_ARRAY
+ if (remote_host) {
+ LWIP_DEBUGF(TCP_DEBUG, ("Found host structure\n"));
+ pcb = remote_host->pcbs[tcphdr->src];
+ if (pcb && pcb->remote_port == tcphdr->src && pcb->local_port == tcphdr->dest && ip_addr_cmp(&pcb->remote_ip, ip_current_src_addr()) && ip_addr_cmp(&pcb->local_ip, ip_current_dest_addr())) {
+ if (pcb->state == TIME_WAIT) {
+ {
+ tcp_timewait_input(pcb);
+ }
+ pbuf_free(p);
+ return;
+ } else if (pcb->state == CLOSED) {
+ pcb = NULL;
+ return;
+ }
+ LWIP_DEBUGF(TCP_DEBUG, ("Found pcb for %" U16_F " at %p \n", tcphdr->src, pcb));
+ }
+ }
+#else
+ for (pcb = tcp_active_pcbs; pcb != NULL; pcb = pcb->next)
+ {
LWIP_ASSERT("tcp_input: active pcb->state != CLOSED", pcb->state != CLOSED);
LWIP_ASSERT("tcp_input: active pcb->state != TIME-WAIT", pcb->state != TIME_WAIT);
LWIP_ASSERT("tcp_input: active pcb->state != LISTEN", pcb->state != LISTEN);
/* check if PCB is bound to specific netif */
if ((pcb->netif_idx != NETIF_NO_INDEX) &&
- (pcb->netif_idx != netif_get_index(ip_data.current_input_netif))) {
+ (pcb->netif_idx != netif_get_index(ip_data.current_input_netif)))
+ {
prev = pcb;
continue;
}
@@ -262,12 +292,14 @@
if (pcb->remote_port == tcphdr->src &&
pcb->local_port == tcphdr->dest &&
ip_addr_cmp(&pcb->remote_ip, ip_current_src_addr()) &&
- ip_addr_cmp(&pcb->local_ip, ip_current_dest_addr())) {
+ ip_addr_cmp(&pcb->local_ip, ip_current_dest_addr()))
+ {
/* Move this PCB to the front of the list so that subsequent
- lookups will be faster (we exploit locality in TCP segment
- arrivals). */
+ lookups will be faster (we exploit locality in TCP segment
+ arrivals). */
LWIP_ASSERT("tcp_input: pcb->next != pcb (before cache)", pcb->next != pcb);
- if (prev != NULL) {
+ if (prev != NULL)
+ {
prev->next = pcb->next;
pcb->next = tcp_active_pcbs;
tcp_active_pcbs = pcb;
@@ -279,16 +311,18 @@
}
prev = pcb;
}
+#endif
if (pcb == NULL) {
/* If it did not go to an active connection, we check the connections
- in the TIME-WAIT state. */
+ in the TIME-WAIT state. */
+#ifndef LWIP_PCB_ARRAY
for (pcb = tcp_tw_pcbs; pcb != NULL; pcb = pcb->next) {
LWIP_ASSERT("tcp_input: TIME-WAIT pcb->state == TIME-WAIT", pcb->state == TIME_WAIT);
/* check if PCB is bound to specific netif */
if ((pcb->netif_idx != NETIF_NO_INDEX) &&
- (pcb->netif_idx != netif_get_index(ip_data.current_input_netif))) {
+ (pcb->netif_idx != netif_get_index(ip_data.current_input_netif))) {
continue;
}
@@ -297,12 +331,12 @@
ip_addr_cmp(&pcb->remote_ip, ip_current_src_addr()) &&
ip_addr_cmp(&pcb->local_ip, ip_current_dest_addr())) {
/* We don't really care enough to move this PCB to the front
- of the list since we are not very likely to receive that
- many segments for connections in TIME-WAIT. */
+ of the list since we are not very likely to receive that
+ many segments for connections in TIME-WAIT. */
LWIP_DEBUGF(TCP_INPUT_DEBUG, ("tcp_input: packed for TIME_WAITing connection.\n"));
#ifdef LWIP_HOOK_TCP_INPACKET_PCB
if (LWIP_HOOK_TCP_INPACKET_PCB(pcb, tcphdr, tcphdr_optlen, tcphdr_opt1len,
- tcphdr_opt2, p) == ERR_OK)
+ tcphdr_opt2, p) == ERR_OK)
#endif
{
tcp_timewait_input(pcb);
@@ -311,6 +345,7 @@
return;
}
}
+#endif
/* Finally, if we still did not get a match, we check all PCBs that
are LISTENing for incoming connections. */
@@ -632,12 +669,15 @@
struct tcp_pcb *npcb;
u32_t iss;
err_t rc;
+ struct tcp_host *remote;
if (flags & TCP_RST) {
/* An incoming RST should be ignored. Return. */
return;
}
+ LWIP_DEBUGF(TCP_DEBUG, ("Entering tcp_listen_input\n"));
+
LWIP_ASSERT("tcp_listen_input: invalid pcb", pcb != NULL);
/* In the LISTEN state, we check for incoming SYN segments,
@@ -697,6 +737,43 @@
for it. */
TCP_REG_ACTIVE(npcb);
+ for (remote = tcp_remote_hosts; remote != NULL; remote = remote->next) {
+ if (ip_addr_cmp(&remote->remote_ip, &npcb->remote_ip)) {
+ remote->pcbs[npcb->remote_port] = npcb;
+ remote->connections++;
+ break;
+ }
+ }
+
+ if (remote == NULL) {
+ remote = (struct tcp_host*)mem_malloc(sizeof(struct tcp_host));
+ LWIP_DEBUGF(TCP_DEBUG, ("Created new remote host struct"));
+ if (remote == NULL)
+ {
+ err_t err;
+ LWIP_DEBUGF(TCP_DEBUG, ("No memory for host struct, aborting."));
+ TCP_EVENT_ACCEPT(pcb, NULL, pcb->callback_arg, ERR_MEM, err);
+ LWIP_UNUSED_ARG(err);
+ tcp_free(npcb);
+ return;
+ }
+ if (!tcp_remote_hosts) {
+ tcp_remote_hosts = remote;
+ remote->next = NULL;
+ remote->prev = NULL;
+ }
+ else
+ {
+ remote->next = tcp_remote_hosts;
+ tcp_remote_hosts->prev = remote;
+ tcp_remote_hosts = remote;
+ }
+ remote->pcbs[npcb->remote_port] = npcb;
+ LWIP_DEBUGF(TCP_DEBUG, ("Registered new pcb for remote port %"U16_F".\n", npcb->remote_port));
+ remote->connections++;
+ ip_addr_copy(remote->remote_ip, npcb->remote_ip);
+ }
+
/* Parse any options in the SYN. */
tcp_parseopt(npcb);
npcb->snd_wnd = tcphdr->wnd;
@@ -722,6 +799,7 @@
return;
}
tcp_output(npcb);
+ LWIP_DEBUGF(TCP_DEBUG, ("Sent out SYN/ACK"));
}
return;
}
diff --color -urBN contrib/mxip-e310a8d13995d4b3110cb727a298d781b4f03504/src/lib/lwip/src/include/lwip/priv/tcp_priv.h /home/mml/genode/contrib/mxip-e310a8d13995d4b3110cb727a298d781b4f03504/src/lib/lwip/src/include/lwip/priv/tcp_priv.h
--- contrib/mxip-e310a8d13995d4b3110cb727a298d781b4f03504/src/lib/lwip/src/include/lwip/priv/tcp_priv.h 2025-05-27 15:39:53.166278728 +0200
+++ /home/mml/genode/contrib/mxip-e310a8d13995d4b3110cb727a298d781b4f03504/src/lib/lwip/src/include/lwip/priv/tcp_priv.h 2024-11-29 17:07:08.503870622 +0100
@@ -337,7 +337,8 @@
extern struct tcp_pcb *tcp_active_pcbs; /* List of all TCP PCBs that are in a
state in which they accept or send
data. */
-extern struct tcp_pcb *tcp_tw_pcbs; /* List of all TCP PCBs in TIME-WAIT. */
+extern struct tcp_pcb *tcp_tw_pcbs; /* List of all TCP PCBs in TIME-WAIT. */
+extern struct tcp_host *tcp_remote_hosts; /* List of all remote hosts */
#define NUM_TCP_PCB_LISTS_NO_TIME_WAIT 3
#define NUM_TCP_PCB_LISTS 4
diff --color -urBN contrib/mxip-e310a8d13995d4b3110cb727a298d781b4f03504/src/lib/lwip/src/include/lwip/tcp.h /home/mml/genode/contrib/mxip-e310a8d13995d4b3110cb727a298d781b4f03504/src/lib/lwip/src/include/lwip/tcp.h
--- contrib/mxip-e310a8d13995d4b3110cb727a298d781b4f03504/src/lib/lwip/src/include/lwip/tcp.h 2025-05-27 15:39:53.170278716 +0200
+++ /home/mml/genode/contrib/mxip-e310a8d13995d4b3110cb727a298d781b4f03504/src/lib/lwip/src/include/lwip/tcp.h 2024-11-29 17:58:42.480001967 +0100
@@ -388,6 +388,14 @@
#endif
};
+struct tcp_host {
+ struct tcp_host *next;
+ struct tcp_host *prev;
+ struct tcp_pcb *pcbs[65536];
+ ip_addr_t remote_ip;
+ u16_t connections;
+};
+
#if LWIP_EVENT_API
enum lwip_event {