Author: jajcus Date: Fri Feb 24 07:51:38 2006 GMT
Module: SOURCES Tag: HEAD
---- Log message:
- MPPE/MPPC support from
http://mppe-mppc.alphacron.de/ppp-2.4.3-mppe-mppc-1.1.patch.gz
---- Files affected:
SOURCES:
ppp-2.4.3-mppe-mppc-1.1.patch (NONE -> 1.1) (NEW)
---- Diffs:
================================================================
Index: SOURCES/ppp-2.4.3-mppe-mppc-1.1.patch
diff -u /dev/null SOURCES/ppp-2.4.3-mppe-mppc-1.1.patch:1.1
--- /dev/null Fri Feb 24 08:51:38 2006
+++ SOURCES/ppp-2.4.3-mppe-mppc-1.1.patch Fri Feb 24 08:51:33 2006
@@ -0,0 +1,1585 @@
+diff -ruN ppp-2.4.3.orig/include/linux/ppp-comp.h
ppp-2.4.3/include/linux/ppp-comp.h
+--- ppp-2.4.3.orig/include/linux/ppp-comp.h 2002-12-06 10:49:15.000000000
+0100
++++ ppp-2.4.3/include/linux/ppp-comp.h 2004-11-21 13:54:09.000000000 +0100
+@@ -36,7 +36,7 @@
+ */
+
+ /*
+- * ==FILEVERSION 20020319==
++ * ==FILEVERSION 20020715==
+ *
+ * NOTE TO MAINTAINERS:
+ * If you modify this file at all, please set the above date.
+@@ -86,7 +86,7 @@
+
+ /* Compress a packet */
+ int (*compress) (void *state, unsigned char *rptr,
+- unsigned char *obuf, int isize, int osize);
++ unsigned char *obuf, int isize, int osize);
+
+ /* Return compression statistics */
+ void (*comp_stat) (void *state, struct compstat *stats);
+@@ -107,7 +107,7 @@
+
+ /* Decompress a packet. */
+ int (*decompress) (void *state, unsigned char *ibuf, int isize,
+- unsigned char *obuf, int osize);
++ unsigned char *obuf, int osize);
+
+ /* Update state for an incompressible packet received */
+ void (*incomp) (void *state, unsigned char *ibuf, int icnt);
+@@ -288,6 +288,33 @@
+ opts |= MPPE_OPT_UNKNOWN; \
+ } while (/* CONSTCOND */ 0)
+
++/* MPPE/MPPC definitions by J.D.*/
++#define MPPE_STATELESS MPPE_H_BIT /* configuration bit H */
++#define MPPE_40BIT MPPE_L_BIT /* configuration bit L */
++#define MPPE_56BIT MPPE_M_BIT /* configuration bit M */
++#define MPPE_128BIT MPPE_S_BIT /* configuration bit S */
++#define MPPE_MPPC MPPE_C_BIT /* configuration bit C */
++
++/*
++ * Definitions for Stac LZS.
++ */
++
++#define CI_LZS 17 /* config option for Stac LZS */
++#define CILEN_LZS 5 /* length of config option */
++
++#define LZS_OVHD 4 /* max. LZS overhead */
++#define LZS_HIST_LEN 2048 /* LZS history size */
++#define LZS_MAX_CCOUNT 0x0FFF /* max. coherency counter value
*/
++
++#define LZS_MODE_NONE 0
++#define LZS_MODE_LCB 1
++#define LZS_MODE_CRC 2
++#define LZS_MODE_SEQ 3
++#define LZS_MODE_EXT 4
++
++#define LZS_EXT_BIT_FLUSHED 0x80 /* bit A */
++#define LZS_EXT_BIT_COMP 0x20 /* bit C */
++
+ /*
+ * Definitions for other, as yet unsupported, compression methods.
+ */
+diff -ruN ppp-2.4.3.orig/include/net/ppp-comp.h
ppp-2.4.3/include/net/ppp-comp.h
+--- ppp-2.4.3.orig/include/net/ppp-comp.h 2002-12-06 10:49:15.000000000
+0100
++++ ppp-2.4.3/include/net/ppp-comp.h 2004-11-21 13:54:09.000000000 +0100
+@@ -255,6 +255,33 @@
+ opts |= MPPE_OPT_UNKNOWN; \
+ } while (/* CONSTCOND */ 0)
+
++/* MPPE/MPPC definitions by J.D.*/
++#define MPPE_STATELESS MPPE_H_BIT /* configuration bit H */
++#define MPPE_40BIT MPPE_L_BIT /* configuration bit L */
++#define MPPE_56BIT MPPE_M_BIT /* configuration bit M */
++#define MPPE_128BIT MPPE_S_BIT /* configuration bit S */
++#define MPPE_MPPC MPPE_C_BIT /* configuration bit C */
++
++/*
++ * Definitions for Stac LZS.
++ */
++
++#define CI_LZS 17 /* config option for Stac LZS */
++#define CILEN_LZS 5 /* length of config option */
++
++#define LZS_OVHD 4 /* max. LZS overhead */
++#define LZS_HIST_LEN 2048 /* LZS history size */
++#define LZS_MAX_CCOUNT 0x0FFF /* max. coherency counter value
*/
++
++#define LZS_MODE_NONE 0
++#define LZS_MODE_LCB 1
++#define LZS_MODE_CRC 2
++#define LZS_MODE_SEQ 3
++#define LZS_MODE_EXT 4
++
++#define LZS_EXT_BIT_FLUSHED 0x80 /* bit A */
++#define LZS_EXT_BIT_COMP 0x20 /* bit C */
++
+ /*
+ * Definitions for other, as yet unsupported, compression methods.
+ */
+diff -ruN ppp-2.4.3.orig/pppd/ccp.c ppp-2.4.3/pppd/ccp.c
+--- ppp-2.4.3.orig/pppd/ccp.c 2004-11-13 03:28:15.000000000 +0100
++++ ppp-2.4.3/pppd/ccp.c 2004-11-21 13:54:09.000000000 +0100
+@@ -62,12 +62,10 @@
+ static char bsd_value[8];
+ static char deflate_value[8];
+
+-/*
+- * Option variables.
+- */
+ #ifdef MPPE
+-bool refuse_mppe_stateful = 1; /* Allow stateful mode? */
+-#endif
++static int setmppe(char **);
++static int setnomppe(void);
++#endif /* MPPE */
+
+ static option_t ccp_option_list[] = {
+ { "noccp", o_bool, &ccp_protent.enabled_flag,
+@@ -108,54 +106,36 @@
+ "don't allow Predictor-1", OPT_ALIAS | OPT_PRIOSUB | OPT_A2CLR,
+ &ccp_allowoptions[0].predictor_1 },
+
++ { "lzs", o_bool, &ccp_wantoptions[0].lzs,
++ "request Stac LZS", 1, &ccp_allowoptions[0].lzs, OPT_PRIO },
++ { "+lzs", o_bool, &ccp_wantoptions[0].lzs,
++ "request Stac LZS", 1, &ccp_allowoptions[0].lzs, OPT_ALIAS | OPT_PRIO },
++ { "nolzs", o_bool, &ccp_wantoptions[0].lzs,
++ "don't allow Stac LZS", OPT_PRIOSUB | OPT_A2CLR,
++ &ccp_allowoptions[0].lzs },
++ { "-lzs", o_bool, &ccp_wantoptions[0].lzs,
++ "don't allow Stac LZS", OPT_ALIAS | OPT_PRIOSUB | OPT_A2CLR,
++ &ccp_allowoptions[0].lzs },
++
+ #ifdef MPPE
+- /* MPPE options are symmetrical ... we only set wantoptions here */
+- { "require-mppe", o_bool, &ccp_wantoptions[0].mppe,
+- "require MPPE encryption",
+- OPT_PRIO | MPPE_OPT_40 | MPPE_OPT_128 },
+- { "+mppe", o_bool, &ccp_wantoptions[0].mppe,
+- "require MPPE encryption",
+- OPT_ALIAS | OPT_PRIO | MPPE_OPT_40 | MPPE_OPT_128 },
+- { "nomppe", o_bool, &ccp_wantoptions[0].mppe,
+- "don't allow MPPE encryption", OPT_PRIO },
+- { "-mppe", o_bool, &ccp_wantoptions[0].mppe,
+- "don't allow MPPE encryption", OPT_ALIAS | OPT_PRIO },
+-
+- /* We use ccp_allowoptions[0].mppe as a junk var ... it is reset later */
+- { "require-mppe-40", o_bool, &ccp_allowoptions[0].mppe,
+- "require MPPE 40-bit encryption", OPT_PRIO | OPT_A2OR | MPPE_OPT_40,
+- &ccp_wantoptions[0].mppe },
+- { "+mppe-40", o_bool, &ccp_allowoptions[0].mppe,
+- "require MPPE 40-bit encryption", OPT_PRIO | OPT_A2OR | MPPE_OPT_40,
+- &ccp_wantoptions[0].mppe },
+- { "nomppe-40", o_bool, &ccp_allowoptions[0].mppe,
+- "don't allow MPPE 40-bit encryption",
+- OPT_PRIOSUB | OPT_A2CLRB | MPPE_OPT_40, &ccp_wantoptions[0].mppe },
+- { "-mppe-40", o_bool, &ccp_allowoptions[0].mppe,
+- "don't allow MPPE 40-bit encryption",
+- OPT_ALIAS | OPT_PRIOSUB | OPT_A2CLRB | MPPE_OPT_40,
+- &ccp_wantoptions[0].mppe },
+-
+- { "require-mppe-128", o_bool, &ccp_allowoptions[0].mppe,
+- "require MPPE 128-bit encryption", OPT_PRIO | OPT_A2OR | MPPE_OPT_128,
+- &ccp_wantoptions[0].mppe },
+- { "+mppe-128", o_bool, &ccp_allowoptions[0].mppe,
+- "require MPPE 128-bit encryption",
+- OPT_ALIAS | OPT_PRIO | OPT_A2OR | MPPE_OPT_128,
+- &ccp_wantoptions[0].mppe },
+- { "nomppe-128", o_bool, &ccp_allowoptions[0].mppe,
+- "don't allow MPPE 128-bit encryption",
+- OPT_PRIOSUB | OPT_A2CLRB | MPPE_OPT_128, &ccp_wantoptions[0].mppe },
+- { "-mppe-128", o_bool, &ccp_allowoptions[0].mppe,
+- "don't allow MPPE 128-bit encryption",
+- OPT_ALIAS | OPT_PRIOSUB | OPT_A2CLRB | MPPE_OPT_128,
+- &ccp_wantoptions[0].mppe },
+-
+- /* strange one; we always request stateless, but will we allow stateful?
*/
+- { "mppe-stateful", o_bool, &refuse_mppe_stateful,
+- "allow MPPE stateful mode", OPT_PRIO },
+- { "nomppe-stateful", o_bool, &refuse_mppe_stateful,
+- "disallow MPPE stateful mode", OPT_PRIO | 1 },
++ { "mppc", o_bool, &ccp_wantoptions[0].mppc,
++ "request MPPC compression", 1, &ccp_allowoptions[0].mppc },
++ { "+mppc", o_bool, &ccp_wantoptions[0].mppc,
++ "request MPPC compression", 1, &ccp_allowoptions[0].mppc, OPT_ALIAS },
++ { "nomppc", o_bool, &ccp_wantoptions[0].mppc,
++ "don't allow MPPC compression", OPT_PRIOSUB | OPT_A2CLR,
++ &ccp_allowoptions[0].mppc },
++ { "-mppc", o_bool, &ccp_wantoptions[0].mppc,
++ "don't allow MPPC compression", OPT_ALIAS | OPT_PRIOSUB | OPT_A2CLR,
++ &ccp_allowoptions[0].mppc },
++ { "mppe", o_special, (void *)setmppe,
++ "request MPPE encryption" },
++ { "+mppe", o_special, (void *)setmppe,
++ "request MPPE encryption" },
++ { "nomppe", o_special_noarg, (void *)setnomppe,
++ "don't allow MPPE encryption" },
++ { "-mppe", o_special_noarg, (void *)setnomppe,
++ "don't allow MPPE encryption" },
+ #endif /* MPPE */
+
+ { NULL }
+@@ -241,7 +221,7 @@
+ */
+ #define ANY_COMPRESS(opt) ((opt).deflate || (opt).bsd_compress \
+ || (opt).predictor_1 || (opt).predictor_2 \
+- || (opt).mppe)
++ || (opt).lzs || (opt).mppc || (opt).mppe)
+
+ /*
+ * Local state (mainly for handling reset-reqs and reset-acks).
+@@ -344,6 +324,100 @@
+ return 1;
+ }
+
++#ifdef MPPE
++/*
++ * Functions called from config options
++ */
++/*
++ MPPE suboptions:
++ required - require MPPE; disconnect if peer doesn't support it
++ stateless - use stateless mode
++ no40 - disable 40 bit keys
++ no56 - disable 56 bit keys
++ no128 - disable 128 bit keys
++*/
++int setmppe(char **argv)
++{
++ int i;
++ char *str, cmdbuf[16];
++
++ ccp_allowoptions[0].mppe = 1;
++ ccp_allowoptions[0].mppe_40 = 1;
++ ccp_allowoptions[0].mppe_56 = 1;
++ ccp_allowoptions[0].mppe_128 = 1;
++ ccp_allowoptions[0].mppe_stateless = 0;
++ ccp_wantoptions[0].mppe = 0;
++
++ str = *argv;
++
++ while (1) {
++ i = 0;
++ memset(cmdbuf, '\0', 16);
++ while ((i < 16) && (*str != ',') && (*str != '\0'))
++ cmdbuf[i++] = *str++;
++ cmdbuf[i] = '\0';
++ if (!strncasecmp(cmdbuf, "no40", strlen("no40"))) {
++ ccp_allowoptions[0].mppe_40 = 0;
++ goto next_param;
++ } else if (!strncasecmp(cmdbuf, "no56", strlen("no56"))) {
++ ccp_allowoptions[0].mppe_56 = 0;
++ goto next_param;
++ } else if (!strncasecmp(cmdbuf, "no128", strlen("no128"))) {
++ ccp_allowoptions[0].mppe_128 = 0;
++ goto next_param;
++ } else if (!strncasecmp(cmdbuf, "stateless", strlen("stateless"))) {
++ ccp_allowoptions[0].mppe_stateless = 1;
++ goto next_param;
++ } else if (!strncasecmp(cmdbuf, "required", strlen("required"))) {
++ ccp_wantoptions[0].mppe = 1;
++ goto next_param;
++ } else {
++ option_error("invalid parameter '%s' for mppe option", cmdbuf);
++ return 0;
++ }
++
++ next_param:
++ if (*str == ',') {
++ str++;
++ continue;
++ }
++ if (*str == '\0') {
++ if (!(ccp_allowoptions[0].mppe_40 || ccp_allowoptions[0].mppe_56 ||
++ ccp_allowoptions[0].mppe_128)) {
++ if (ccp_wantoptions[0].mppe == 1) {
++ option_error("You require MPPE but you have switched off "
++ "all encryption key lengths.");
++ return 0;
++ }
++ ccp_wantoptions[0].mppe = ccp_allowoptions[0].mppe = 0;
++ ccp_wantoptions[0].mppe_stateless =
++ ccp_allowoptions[0].mppe_stateless = 0;
++ } else {
++ ccp_allowoptions[0].mppe = 1;
++ ccp_wantoptions[0].mppe_stateless =
++ ccp_allowoptions[0].mppe_stateless;
++ if (ccp_wantoptions[0].mppe == 1) {
++ ccp_wantoptions[0].mppe_40 = ccp_allowoptions[0].mppe_40;
++ ccp_wantoptions[0].mppe_56 = ccp_allowoptions[0].mppe_56;
++ ccp_wantoptions[0].mppe_128 = ccp_allowoptions[0].mppe_128;
++ }
++ }
++ return 1;
++ }
++ }
++}
++
++int setnomppe(void)
++{
++ ccp_wantoptions[0].mppe = ccp_allowoptions[0].mppe = 0;
++ ccp_wantoptions[0].mppe_40 = ccp_allowoptions[0].mppe_40 = 0;
++ ccp_wantoptions[0].mppe_56 = ccp_allowoptions[0].mppe_56 = 0;
++ ccp_wantoptions[0].mppe_128 = ccp_allowoptions[0].mppe_128 = 0;
++ ccp_wantoptions[0].mppe_stateless = ccp_allowoptions[0].mppe_stateless =
0;
++ return 1;
++}
++#endif /* MPPE */
++
+ /*
+ * ccp_init - initialize CCP.
+ */
+@@ -378,6 +452,30 @@
+ ccp_allowoptions[0].bsd_bits = BSD_MAX_BITS;
+
+ ccp_allowoptions[0].predictor_1 = 1;
++
++ ccp_wantoptions[0].lzs = 0; /* Stac LZS - will be enabled in the future
*/
++ ccp_wantoptions[0].lzs_mode = LZS_MODE_SEQ;
++ ccp_wantoptions[0].lzs_hists = 1;
++ ccp_allowoptions[0].lzs = 0; /* Stac LZS - will be enabled in the future
*/
++ ccp_allowoptions[0].lzs_mode = LZS_MODE_SEQ;
++ ccp_allowoptions[0].lzs_hists = 1;
++
++#ifdef MPPE
++ /* by default allow and request MPPC... */
++ ccp_wantoptions[0].mppc = ccp_allowoptions[0].mppc = 1;
++
++ /* ... and allow but don't request MPPE */
++ ccp_allowoptions[0].mppe = 1;
++ ccp_allowoptions[0].mppe_40 = 1;
++ ccp_allowoptions[0].mppe_56 = 1;
++ ccp_allowoptions[0].mppe_128 = 1;
++ ccp_allowoptions[0].mppe_stateless = 1;
++ ccp_wantoptions[0].mppe = 0;
++ ccp_wantoptions[0].mppe_40 = 0;
++ ccp_wantoptions[0].mppe_56 = 0;
++ ccp_wantoptions[0].mppe_128 = 0;
++ ccp_wantoptions[0].mppe_stateless = 0;
++#endif /* MPPE */
+ }
+
+ /*
+@@ -455,11 +553,11 @@
+ if (oldstate == OPENED && p[0] == TERMREQ && f->state != OPENED) {
+ notice("Compression disabled by peer.");
+ #ifdef MPPE
+- if (ccp_gotoptions[unit].mppe) {
++ if (ccp_wantoptions[unit].mppe) {
+ error("MPPE disabled, closing LCP");
+ lcp_close(unit, "MPPE disabled by peer");
+ }
+-#endif
++#endif /* MPPE */
+ }
+
+ /*
+@@ -487,6 +585,15 @@
+ break;
+ /* send a reset-ack, which the transmitter will see and
+ reset its compression state. */
++
++ /* In case of MPPE/MPPC or LZS we shouldn't send CCP_RESETACK,
++ but we do it in order to reset compressor; CCP_RESETACK is
++ then silently discarded. See functions ppp_send_frame and
++ ppp_ccp_peek in ppp_generic.c (Linux only !!!). All the
++ confusion is caused by the fact that CCP code is splited
++ into two parts - one part is handled by pppd, the other one
++ is handled by kernel. */
++
+ fsm_sdata(f, CCP_RESETACK, id, NULL, 0);
+ break;
+
+@@ -515,12 +622,11 @@
+ fsm_lowerdown(&ccp_fsm[unit]);
+
+ #ifdef MPPE
+- if (ccp_gotoptions[unit].mppe) {
++ if (ccp_wantoptions[unit].mppe) {
+ error("MPPE required but peer negotiation failed");
+ lcp_close(unit, "MPPE required but peer negotiation failed");
+ }
+-#endif
+-
++#endif /* MPPE */
+ }
+
+ /*
+@@ -537,7 +643,7 @@
+ all_rejected[f->unit] = 0;
+
+ #ifdef MPPE
+- if (go->mppe) {
++ if (go->mppe || go->mppc) {
+ ccp_options *ao = &ccp_allowoptions[f->unit];
+ int auth_mschap_bits = auth_done[f->unit];
+ int numbits;
+@@ -551,80 +657,109 @@
+ * NB: If MPPE is required, all other compression opts are invalid.
+ * So, we return right away if we can't do it.
+ */
++ if (ccp_wantoptions[f->unit].mppe) {
++ /* Leave only the mschap auth bits set */
++ auth_mschap_bits &= (CHAP_MS_WITHPEER | CHAP_MS_PEER |
++ CHAP_MS2_WITHPEER | CHAP_MS2_PEER);
++ /* Count the mschap auths */
++ auth_mschap_bits >>= CHAP_MS_SHIFT;
++ numbits = 0;
++ do {
++ numbits += auth_mschap_bits & 1;
++ auth_mschap_bits >>= 1;
++ } while (auth_mschap_bits);
++ if (numbits > 1) {
++ error("MPPE required, but auth done in both directions.");
++ lcp_close(f->unit, "MPPE required but not available");
++ return;
++ }
++ if (!numbits) {
++ error("MPPE required, but MS-CHAP[v2] auth not performed.");
++ lcp_close(f->unit, "MPPE required but not available");
++ return;
++ }
+
+- /* Leave only the mschap auth bits set */
+- auth_mschap_bits &= (CHAP_MS_WITHPEER | CHAP_MS_PEER |
+- CHAP_MS2_WITHPEER | CHAP_MS2_PEER);
+- /* Count the mschap auths */
+- auth_mschap_bits >>= CHAP_MS_SHIFT;
+- numbits = 0;
+- do {
+- numbits += auth_mschap_bits & 1;
+- auth_mschap_bits >>= 1;
+- } while (auth_mschap_bits);
+- if (numbits > 1) {
+- error("MPPE required, but auth done in both directions.");
+- lcp_close(f->unit, "MPPE required but not available");
+- return;
+- }
+- if (!numbits) {
+- error("MPPE required, but MS-CHAP[v2] auth not performed.");
+- lcp_close(f->unit, "MPPE required but not available");
+- return;
+- }
+-
+- /* A plugin (eg radius) may not have obtained key material. */
+- if (!mppe_keys_set) {
+- error("MPPE required, but keys are not available. "
+- "Possible plugin problem?");
+- lcp_close(f->unit, "MPPE required but not available");
+- return;
+- }
+-
+- /* LM auth not supported for MPPE */
+- if (auth_done[f->unit] & (CHAP_MS_WITHPEER | CHAP_MS_PEER)) {
+- /* This might be noise */
+- if (go->mppe & MPPE_OPT_40) {
+- notice("Disabling 40-bit MPPE; MS-CHAP LM not supported");
+- go->mppe &= ~MPPE_OPT_40;
+- ccp_wantoptions[f->unit].mppe &= ~MPPE_OPT_40;
++ /* A plugin (eg radius) may not have obtained key material. */
++ if (!mppe_keys_set) {
++ error("MPPE required, but keys are not available. "
++ "Possible plugin problem?");
++ lcp_close(f->unit, "MPPE required but not available");
++ return;
+ }
+ }
+
+- /* Last check: can we actually negotiate something? */
+- if (!(go->mppe & (MPPE_OPT_40 | MPPE_OPT_128))) {
+- /* Could be misconfig, could be 40-bit disabled above. */
+- error("MPPE required, but both 40-bit and 128-bit disabled.");
+- lcp_close(f->unit, "MPPE required but not available");
+- return;
++ /*
++ * Check whether the kernel knows about the various
++ * compression methods we might request. Key material
++ * unimportant here.
++ */
++ if (go->mppc) {
++ opt_buf[0] = CI_MPPE;
++ opt_buf[1] = CILEN_MPPE;
++ opt_buf[2] = 0;
++ opt_buf[3] = 0;
++ opt_buf[4] = 0;
++ opt_buf[5] = MPPE_MPPC;
++ if (ccp_test(f->unit, opt_buf, CILEN_MPPE, 0) <= 0)
++ go->mppc = 0;
++ }
++ if (go->mppe_40) {
++ opt_buf[0] = CI_MPPE;
++ opt_buf[1] = CILEN_MPPE;
++ opt_buf[2] = MPPE_STATELESS;
++ opt_buf[3] = 0;
++ opt_buf[4] = 0;
++ opt_buf[5] = MPPE_40BIT;
++ if (ccp_test(f->unit, opt_buf, CILEN_MPPE + MPPE_MAX_KEY_LEN, 0) <=
0)
++ go->mppe_40 = 0;
++ }
++ if (go->mppe_56) {
++ opt_buf[0] = CI_MPPE;
++ opt_buf[1] = CILEN_MPPE;
++ opt_buf[2] = MPPE_STATELESS;
++ opt_buf[3] = 0;
++ opt_buf[4] = 0;
++ opt_buf[5] = MPPE_56BIT;
++ if (ccp_test(f->unit, opt_buf, CILEN_MPPE + MPPE_MAX_KEY_LEN, 0) <=
0)
++ go->mppe_56 = 0;
++ }
++ if (go->mppe_128) {
++ opt_buf[0] = CI_MPPE;
++ opt_buf[1] = CILEN_MPPE;
++ opt_buf[2] = MPPE_STATELESS;
++ opt_buf[3] = 0;
++ opt_buf[4] = 0;
++ opt_buf[5] = MPPE_128BIT;
++ if (ccp_test(f->unit, opt_buf, CILEN_MPPE + MPPE_MAX_KEY_LEN, 0) <=
0)
++ go->mppe_128 = 0;
++ }
++ if (!go->mppe_40 && !go->mppe_56 && !go->mppe_128) {
++ if (ccp_wantoptions[f->unit].mppe) {
++ error("MPPE required, but kernel has no support.");
++ lcp_close(f->unit, "MPPE required but not available");
++ }
++ go->mppe = go->mppe_stateless = 0;
++ } else {
++ /* MPPE is not compatible with other compression types */
++ if (ccp_wantoptions[f->unit].mppe) {
++ ao->bsd_compress = go->bsd_compress = 0;
++ ao->predictor_1 = go->predictor_1 = 0;
++ ao->predictor_2 = go->predictor_2 = 0;
++ ao->deflate = go->deflate = 0;
++ ao->lzs = go->lzs = 0;
++ }
+ }
+-
+- /* sync options */
+- ao->mppe = go->mppe;
+- /* MPPE is not compatible with other compression types */
+- ao->bsd_compress = go->bsd_compress = 0;
+- ao->predictor_1 = go->predictor_1 = 0;
+- ao->predictor_2 = go->predictor_2 = 0;
+- ao->deflate = go->deflate = 0;
+ }
+ #endif /* MPPE */
+-
+- /*
+- * Check whether the kernel knows about the various
+- * compression methods we might request.
+- */
+-#ifdef MPPE
+- if (go->mppe) {
+- opt_buf[0] = CI_MPPE;
+- opt_buf[1] = CILEN_MPPE;
+- MPPE_OPTS_TO_CI(go->mppe, &opt_buf[2]);
+- /* Key material unimportant here. */
+- if (ccp_test(f->unit, opt_buf, CILEN_MPPE + MPPE_MAX_KEY_LEN, 0) <= 0) {
+- error("MPPE required, but kernel has no support.");
+- lcp_close(f->unit, "MPPE required but not available");
+- }
++ if (go->lzs) {
++ opt_buf[0] = CI_LZS;
++ opt_buf[1] = CILEN_LZS;
++ opt_buf[2] = go->lzs_hists >> 8;
++ opt_buf[3] = go->lzs_hists & 0xff;
++ opt_buf[4] = LZS_MODE_SEQ;
++ if (ccp_test(f->unit, opt_buf, CILEN_LZS, 0) <= 0)
++ go->lzs = 0;
+ }
+-#endif
+ if (go->bsd_compress) {
+ opt_buf[0] = CI_BSD_COMPRESS;
+ opt_buf[1] = CILEN_BSD_COMPRESS;
+@@ -679,7 +814,8 @@
+ + (go->deflate? CILEN_DEFLATE: 0)
+ + (go->predictor_1? CILEN_PREDICTOR_1: 0)
+ + (go->predictor_2? CILEN_PREDICTOR_2: 0)
+- + (go->mppe? CILEN_MPPE: 0);
++ + (go->lzs? CILEN_LZS: 0)
++ + ((go->mppe || go->mppc)? CILEN_MPPE: 0);
+ }
+
+ /*
+@@ -693,6 +829,8 @@
+ {
+ int res;
+ ccp_options *go = &ccp_gotoptions[f->unit];
++ ccp_options *ao = &ccp_allowoptions[f->unit];
++ ccp_options *wo = &ccp_wantoptions[f->unit];
<<Diff was trimmed, longer than 597 lines>>
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